Du'a using Allah's Name Al-Qaadir

يَا اللَّهُ يَا قَادِرُ يَا قَدِيرُ يَا مُقْتَدِرُ أَرِنِي عَجَائِبَ قُدْرَتِكَ فِيمَا أَتَمَنَّى

Ya Allahu ya Qaadiru ya Qadeeru ya Muqtadiru arini 'aja'iba qudratika feema atamanna

O Allah, The Capable, The All-Powerful, The Omnipotent, show me the wonders of Your power in what I wish for.

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