رَبَّنَا لَا تُزِغْ قُلُوبَنَا بَعْدَ إِذْ هَدَيْتَنَا وَهَبْ لَنَا مِنْ لَّدُنْكَ رَحْمَةً ۚ إِنَّكَ أَنْتَ الْوَهَّابُ

Rabbanaa laa tuzigh quloobanaa ba'da iz hadaitanaa wa hab lanaa mil-ladunka rahmah; innaka Antal-Wahhaab.

Our Lord, let not our hearts deviate after You have guided us and grant us from Yourself mercy. Indeed, You are the Bestower.

Reference: Surah Ali-Imran 3:8