(Allah is the Protecting Friend of those who believe) He protects and gives victory to the believers, referring here to 'Abdullah Ibn Salam and his companions. (He bringeth them out of darkness into light) He gave them success and brought them out of disbelief into faith. (As for those who disbelieve) i.e. Ka'b Ibn al-Ashraf and his companions, (their patrons are false deities) the devil. (They bring them out of light into darkness) they invite them from faith to disbelief. (Such are rightful owners of the Fire) the dwellers of hell. (They will abide therein forever) never to die or leave it.