Quran 68:29 from Surah Al-Qalam on Divine Marvels.
قَالُواْ سُبۡحَٰنَ رَبِّنَآ إِنَّا كُنَّا ظَٰلِمِينَ
English translation: They said Glory be (to) our Lord! Indeed we [we] were wrongdoers
Transliteration: qalu sub'hana rabbina inna kunna zalimina