Arabic text:
لاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ
Text of transcription:
Laa hawla wa laa quwwata 'illaa billaah.
Text of translate:
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: There is no might and no power except by Allah.
Text of reference:
Reference: Al-Bukhari 1/152, Muslim 1/288.