رَبَّنَا لَا تُزِغۡ قُلُوبَنَا بَعۡدَ إِذۡ هَدَيۡتَنَا وَهَبۡ لَنَا مِن لَّدُنكَ رَحۡمَةًۚ إِنَّكَ أَنتَ ٱلۡوَهَّابُ.

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

Rabbana la tuzigh qulubana bada idh hadaytana wahab lana min ladunka rahmatan innaka anta lwahhab

This supplication comes after Allah mentions those who try to seek out and follow verses that might seem obscure in the Qur’an. Such misguided individuals do this in an effort to sow confusion in the hearts of others and to interpret the Qur’an’s verses as they please. Allah states that these are people whose hearts hold an inclination to deviate, and so the Believers ask Allah to protect them against such evil. -At-Tabari and others.