I asked 'A'isha about the supplication that Messenger of Allah ﷺ made. She said that he used to say:" O Allah, I seek refuge in Thee from the evil of what I have done and from the evil of what I have not done."
عَنْ دُعَاءٍ كَانَ يَدْعُو بِهِ رَسُولُ اللَّهِ ﷺ فَقَالَتْ كَانَ يَقُولُ اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ شَرِّ مَا عَمِلْتُ وَشَرِّ مَا لَمْ أَعْمَلْ