(حَيَّ عَلَى الصَّلَاةِ وَحَيَّ عَلَى الْفَلَاحِ.)..... لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللهِ.
Repeat what the Mu'aththin says, except for when he says: Hayya 'alas-Salaah (hasten to the prayer) and Hayya 'alal-Falaah (hasten to salvation). Here you should say: "Laa hawla wa laa quwwata 'illaa billaah."
There is no might and no power except by Allah
وَأَنَا أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ، رَضِيتُ بِاللهِ رَبًّا وَبِمُحَمَّدٍ رَسُولًا وَبِالْإِسْلَامِ دِينًا.
Wa 'anaa 'ash-hadu 'an laa 'ilaaha 'illallaahu wahdahu laa shareeka lahu wa 'anna Muhammadan 'abduhu wa Rasooluhu, radheetu billaahi Rabban, wa bi-Muhammadin Rasoolan wa bil'islaami deenan.
I bear witness that none has the right to be worshipped but Allah alone, Who has no partner, and that Muhammad is His slave and His Messenger. I am pleased with Allah as my Lord, with Muhammad as my Messenger and with Islam as my religion⁽¹⁾ [ To be recited in Arabic after the Mu'aththin's Tashahhud or the words of affirmation of Faith ].⁽²⁾
After replying to the call of Mu'aththin you should recite in Arabic Allah's blessings on the Prophet.
اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ، وَالصَّلَاةِ الْقَائِمَةِ، آتِ مُحَمَّدَا نالْوَسِيلَةَ وَالْفَضِيلَةَ، وَابْعَثْهُ مَقَامًا مَحْمُودَا نلَّذِي وَعَدْتَهُ، [إَنَّكَ لَا تُخْلِفُ الْمِيعَادَ].
Allaahumma Rabba haathihid-da'watit-taammati wassalaatil-qaa'imati, 'aati Muhammadanil-waseelata walfadheelata, wab'ath-hu maqaamam-mahmoodanil-lathee wa'adtahu, [ 'innaka laa tukhliful-mee'aad ].
O Allah, Lord of this perfect call and established prayer. Grant Muhammad the intercession and favor, and raise him to the honored station You have promised him, [verily You do not neglect promises].
Between the call to prayer and the iqamah, you should supplicate Allah for yourself. Invocations during this time is not rejected