Quran 74:9 from Surah Al-Muddaththir on Divine Marvels.
فَذَٰلِكَ يَوۡمَئِذٖ يَوۡمٌ عَسِيرٌ
English translation: That Day (will be) a Day difficult
Transliteration: fadhalika yawma-idhin yawmun asirun