Du'a using Allah's Name Al-Ghaniyy

اللَّهُمَّ يَا غَنِيُّ أَغْنِنَا عَنْ غَيْرِكَ

Allahumma ya Ghaniyyu aghnina 'an ghayrik

O Allah, The Self-Sufficient, make us independent of all besides You.

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