'Aishah (May Allah be pleased with her) reported:
The Prophet (ﷺ) used to supplicate (in these words): "Allahumma inni audhu bika min sharri ma 'amiltu, wa min sharri ma lam a'mal (O Allah! I seek refuge in You from the evil of that which I have done and the evil of that which I have not done)."[Muslim].
App reference: Book 17, Hadith 13
Arabic/English book reference: Book 17, Hadith 1477