Du'a using Allah's Name An-Nafi'

اللَّهُمَّ يَا نَافِعُ انْفَعْنَا بِأَنْوَارِ دِينِنَا

Allahumma ya Nafi'u infa'na bi anwari deenina

O Allah, The Propitious, benefit us with the lights of our religion.

A general supplication, not a narration from the Prophet (peace be upon him).