Quran 2:152 from Surah Al-Baqara on Divine Marvels.
فَٱذۡكُرُونِيٓ أَذۡكُرۡكُمۡ وَٱشۡكُرُواْ لِي وَلَا تَكۡفُرُونِ
English translation: So remember Me I will remember you and be grateful to Me and (do) not (be) ungrateful to Me
Transliteration: fa-udh'kuruni adhkur'kum wa-ush'kuru li wala takfuruni