The dua of Yunus عليه السلام

لَا إِلَٰهَ إِلَّا أَنتَ سُبْحَانَكَ إِنِّي كُنتُ مِنَ الظَّالِمِينَ

La ilaha illa anta, subhanaka, inni kuntu minaz-zalimin

“There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers.”

— Quran 21:87 — "No Muslim ever calls upon Allah with it for anything except that He answers him" (Tirmidhi 3505)