Quran 15:9 from Surah Al-Hijr on Divine Marvels.
إِنَّا نَحۡنُ نَزَّلۡنَا ٱلذِّكۡرَ وَإِنَّا لَهُۥ لَحَٰفِظُونَ
English translation: Indeed We We have sent down the Reminder and indeed We of it (are) surely Guardians
Transliteration: inna nahnu nazzalna al-dhik'ra wa-inna lahu lahafizuna