PROPHET MUHAMMAD (ﷺ) said:
Whoever says:

TEN times at the end of AL-MAGHRIB -
1) Allah shall send for him protectors to guard him from Shaitan until he reaches morning,
2) And Allah writes for him ten good deeds,
3) And He wipes from him ten of the destructive evil deeds,
4) And it shall be for him the equal of freeing ten believing slaves.

TRANSLATION:
One has the right to be worshipped but Allah, Alone, without partner, to Him belongs all that exists, and to Him belongs the praise, He gives life and causes death, and He is powerful over all things.

PROPHET MUHAMMAD (ﷺ) said:
Whoever says THREE times when he reaches the evening:

no poisonous sting shall harm him that night.

TRANSLATION:
I seek refuge in Allah’s Perfect Words from the evil of what he created.

PROPHET MUHAMMAD (ﷺ) said:
Whoever says in the morning and in the evening

a HUNDRED times, none shall bring better than him on the Day of Judgment except one who did the same as him, or increased upon it.

TRANSLATION:
Glory is to Allah and with His Praise.

PROPHET MUHAMMAD (ﷺ) said:
If anyone says a HUNDRED times in the morning:

And says likewise in the evening, no one from the creatures will bring anything like the one which he will bring.

TRANSLATION:
Glory be to Allah, the Sublime, and I begin with praise of him.

PROPHET MUHAMMAD (ﷺ) said:
If anyone says THREE times:

He will not suffer sudden affliction till the morning, and if anyone says this in the morning, he will not suffer sudden affliction till the evening.

TRANSLATION:
In the name of Allah, when Whose name is mentioned nothing on Earth or in Heaven can cause harm, and He is the Hearer, the Knower.

PROPHET MUHAMMAD (ﷺ) said:
If anyone says morning and evening;

Allah will be sufficient for him against anything which grieves him, whetherhe is true or false in (repeating) them.

TRANSLATION:
Allah is sufficient for me, there is none worthy of worship but He, in Him have I put my trust, and He is the Lord of the Mighty Throne.

PROPHET MUHAMMAD (ﷺ) said:
Whoever says in the morning:

1) He will have (a reward) equal to freeing a slave among the sons of Isma'il,
2) Ten bad deeds will be erased from (his record),
3) He will be raised (in status) ten degrees, and
4) He will have protection against Satan until evening comes.
When evening comes, (if he says likewise) he will have the same until morning comes.

TRANSLATION:
None has the right to be worshipped but Allah alone, with no partner or associate. His is the dominion and all praise is to Him, and He is Able to all things.

PROPHET MUHAMMAD (ﷺ) said:
The most superior way of asking for forgiveness from Allah is:

1) If somebody recites it during the day with firm faith in it, and dies on the same day before the evening, he will be from the people of Paradise;
2) And if somebody recites it at night with firm faith in it, and dies before the morning, he will be from the people of Paradise.

TRANSLATION:
O Allah, You are my Lord, there is no god but You. You have created me and I am Your slave and I am keeping my promise and covenant to You as much as I can. I seek refuge with You from the evil of what I do. I acknowledge Your blessing and I acknowledge my sin, so forgive me, for there is none who can forgive sin except You.

PROPHET MUHAMMAD (ﷺ) said:
Say: “Say: He is Allah, the One (Surah Ikhlas)” and Al-Mu’awwidhatain (Surah Falaq & Surah Naas), when you reach evening, and when you reach morning, THREE times, they will suffice you against everything.

SURAH IKHLAAS
112:1 Say, "He is Allah , [who is] One,
112:2 Allah , the Eternal Refuge.
112:3 He neither begets nor is born,
112:4 Nor is there to Him any equivalent."

SURAH FALAQ
113:1 Say, "I seek refuge in the Lord of daybreak
113:2 From the evil of that which He created
113:3 And from the evil of darkness when it settles
113:4 And from the evil of the blowers in knots
113:5 And from the evil of an envier when he envies."

SURAH NAAS
114:1 Say, "I seek refuge in the Lord of mankind,
114:2 The Sovereign of mankind.
114:3 The God of mankind,
114:4 From the evil of the retreating whisperer -
114:5 Who whispers [evil] into the breasts of mankind -
114:6 From among the jinn and mankind."

PROPHET MUHAMMAD (ﷺ) said:
No worshipper has ever said:

sincerely, except that the gates of heaven are opened for it, until it reaches to the Throne, so long as he avoids the major sins.

TRANSLATION:
None has the right to be worshipped but Allah

PROPHET MUHAMMAD (ﷺ) said:
Whoever says:

ONE HUNDRED times a day, will be forgiven all his sins even if they were as much as the foam of the sea.

TRANSLATION:
Glory is to Allah and the praise

PROPHET MUHAMMAD (ﷺ) said:
There are two expressions which are very easy for the tongue to say, but they are very heavy in the balance and are very dear to The Beneficent (Allah), and they are,

TRANSLATION:
Glory is to Allah, the Magnificient; Glory is to Allah and the praise.

It was narrated from Juwayriyah that the Prophet (ﷺ) left her one morning when he (ﷺ) prayed Subh, (i.e., Fajr prayer) and she was in her prayer-place, then he (ﷺ) came back after the forenoon had come, and she was still sitting there. He (ﷺ) said: Are you still as you were when I left you?’ She said: Yes. The Prophet (ﷺ) said: After I left you I said four words THREE times, which if they were weighed against what you have said today, they would outweigh it:

Glory and praise is to Allah,
1) As much as the number of His creation,
2) As much as pleases Him,
3) As much as the weight of His Throne and
4) As much as the ink of His words.

PROPHET MUHAMMAD (ﷺ) said:
Whoever says:

then Allah will forgive him, even if he fled from battle.

TRANSLATION:
I seek forgiveness from Allah, the Magnificent, whom there is none worthy of worship but Him, the Living, Al-Qayyum, and I repent to him.

PROPHET MUHAMMAD (ﷺ) said:
Whoever says:

ONE HUNDRED times will get the same reward
1) As given for manumitting (freeing) ten slaves;
2) And one hundred good deeds will be written in his accounts,
3) And one hundred sins will be deducted from his accounts,
4) And it (his saying) will be a shield for him from Satan on that day till night,
5) And nobody will be able to do a better deed except the one who does more than he.

NOTE : In Hadith of Sahih Muslim, it is mentioned freeing 100 slaves.