لَا إِلَهَ إِلَّا أنْتَ سُبْحَانَكَ، إِنِّي كُنْتُ مِنَ الظَّالِمِيْنَ

None has the right to be worshiped except You. How perfect You are, verily I was among the wrongdoers.

Reference: None has the right to be worshiped except You. How perfect You are, verily I was among the wrongdoers. Al-Tirmidhī (#3505, 5/529) and al-Hākim (1/505) and he authenticated it and al-Dhahabī agreed with him. Also see _Ṣaḥīḥ al-Tirmidhī_ (3/168).