PROPHET MUHAMMAD (ﷺ) said:
When the Mu'adhdhin calls the Azaan, the Shaitaan runs away quickly.
It was narrated from A1-A'maIi, from Abu Sufyan, that Jabir said: "I heard the Prophet (ﷺ) say: 'When the Shaitaan hears the call to prayer, he goes away as far as Ar- Rawha'." Sulaimân (Al-A'mah) said: "I asked him about Ar-Rawha', and he said: 'It is thirty-six miles away from Al-Madinah."'
When the Azaan is pronounced Satan takes to his heels and passes wind with noise during his flight in order not to hear the Azaan. When the Azaan is completed he comes back and again takes to his heels when the Iqama is pronounced and after its completion he returns again till he whispers into the heart of the person (to divert his attention from his prayer) and makes him remember things which he does not recall to his mind before the prayer and that causes him to forget how much he has prayed.
It was narrated that Suhail said: "My father sent me to Banu Hariah, and with me was a slave of ours - or a friend of ours. A voice called him by name from behind a wall. The one who was with me looked over the wall but could not see anything. I mentioned that to my father and he said: 'If I had known that that would happen to you, I would not have sent you. But (in future) if you hear a voice (and do not see anything), then give the call to prayer, for I heard Abu Hurairah narrating that the Messenger of Allah (ﷺ) said: "When the call to prayer is given, the Shaitaan runs away quickly."
'Abdullah bin Zaid narrated: "When the Prophet ordered that a bell be rung so that people congregate for the prayer, I saw in my dream a person coming to me with a bell in his hand. So I said: 'O servant of Allah! Will you sell (me) the bell?' He said: 'What will you do with it?' I said, 'We will call people with it to the prayer.' So he said: 'Should I not inform you of something which will be better than this?' I said: 'Yes, of course!' So he said: 'Say:
اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ
أَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ أَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ
أَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللَّهِ أَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللَّهِ
حَىَّ عَلَى الصَّلاَةِ حَىَّ عَلَى الصَّلاَةِ
حَىَّ عَلَى الْفَلاَحِ حَىَّ عَلَى الْفَلاَحِ
اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ
لاَ إِلَهَ إِلاَّ اللَّهُ
Then (the person) moved a small distance away and said: 'Then you should say, when you wish to start the prayer:
"Allãhu Akbaru Allãhu akbaru, Ashhadu anla ilãha illallah, Ashhadu anna Muhammadan Rasülullah. Hayya 'ala-sa1ãt, Hayya 'alal-falah. Qad qamatis-salah, Qad qamatis-salah. Allahu Akbaru Allãhu Akbaru, la ilaha illallah."
(Allah is the Most Great, Allah is the Most Great, I bear witness that none has the right to be worshiped but Allah, I bear witness that Muhammad is the Messenger of Allah; Come to the prayer; Come to the prosperity; The prayer is about to begin; Allah is the Most Great, Allah is the Most Great; none has the right to be worshiped but Allah).
The next morning, I came to the Messenger of Allah (ﷺ) and informed him of my dream. He said: 'This is a true dream (from Allah), Allah willing. Stand up with Bilãl and tell him (the words) that saw in your dream, for he has a louder voice than you.' So I stood with Bilal and started reciting to him (the words), and he would call them out (loudly). 'Umar bin Al- Khattab heard this while he was in his house, so he left (his house) dragging his Rida' behind him, saying: '(I swear) by Him Who has sent you with the truth, 0 Messenger of Allah, I (too) dreamt the same dream that he has been shown.' So the Messenger of Allah (ﷺ) said: 'Then all praises are due to Allah."
TRANSLATION:
1) Allah is the Most Great;
2) I bear witness that none has the right to be worshiped but Allah;
3) I bear witness that Muhammad is the Messenger of Allah;
4) Come to the prayer;
5) Come to the prosperity;
6) Allah is the Most Great,
7) Allah is the Most Great;
8) None has the right to be worshiped but Allah.