Quran 69:50 from Surah Al-Haaqqa on Divine Marvels.
وَإِنَّهُۥ لَحَسۡرَةٌ عَلَى ٱلۡكَٰفِرِينَ
English translation: And indeed it (is) surely a regret upon the disbelievers
Transliteration: wa-innahu lahasratun ala al-kafirina