Quran 82:18 from Surah Al-Infitaar on Divine Marvels.
ثُمَّ مَآ أَدۡرَىٰكَ مَا يَوۡمُ ٱلدِّينِ
English translation: Then what can make you know what (is the) Day (of) the Judgment
Transliteration: thumma ma adraka ma yawmu al-dini