Surah Al-Baqarah, ayah 152

فَٱذۡكُرُونِيٓ أَذۡكُرۡكُمۡ وَٱشۡكُرُواْ لِي وَلَا تَكۡفُرُونِ ١٥٢

Fadhkurūnī adhkurkum washkurū lī walā takfurūn

So remember Me; I will remember you. And be grateful to Me and do not deny Me.