That is because Allah is the Maula (Lord, Master, Helper, Protector, etc.) of those who believe, and the disbelievers have no Maula (lord, master, helper, protector, etc.).
Wancan! Sabõda lalle Allah ne Majiɓincin waɗanda suka yi ĩmãni, kuma lalle, kafirai bãbu wani majiɓinci a gare su.