Quran 69:20 from Surah Al-Haaqqa on Divine Marvels.
إِنِّي ظَنَنتُ أَنِّي مُلَٰقٍ حِسَابِيَهۡ
English translation: Indeed I was certain that I (will) meet my account
Transliteration: inni zanantu anni mulaqin hisabiyah