Has it been reported from the Prophet (peace be upon him) the supplication: "O Allah, I disavow my own power and strength and seek refuge in Your power and strength, O Possessor of Enduring Might"?

No evidence has been found to attribute this supplication to the Prophet, peace and blessings be upon him. However, its meaning is sound, and its validity is supported by what is narrated in Al-Bukhari and Muslim from Al-Bara' bin 'Azib: "O Allah, I have surrendered myself to You, entrusted my affairs to You, and sought refuge in You out of awe and desire for You. There is no refuge or escape from You except to You."