رَبَّنَا إِنَّنَا آمَنَّا فَاغْفِرْ لَنَا ذُنُوبَنَا وَقِنَا عَذَابَ النَّارِ

Rabbanaaa innanaaa aamannaa faghfir lanaa zunoobanaa wa qinaa 'azaaban-Naar.

Our Lord, indeed we have believed, so forgive us our sins and protect us from the punishment of the Fire

Reference: Surah Ali-Imran 3:16