Yamunnoona 'alaika an aslamoo qul laa tamunnoo 'alaiya Islaamakum balillaahu yamunnu 'alaikum an hadaakum lil eemaani in kuntum saadiqeen
They consider it a favor to you that they have accepted Islam. Say, "Do not consider your Islam a favor to me. Rather, Allah has conferred favor upon you that He has guided you to the faith, if you should be truthful."