Allah is the Protector of those who believe. He brings them out of the darkness and into the light. But those who do not believe have false deities as protectors. They take them from the light into the darkness. Those are the Companions of the Fire remaining in it timelessly, forever. ( Surat al-Baqara, 2:257)
Both in this world and in the next, people have only one real friend. This friend never abandons them, is next to them, and helps them in the face of every difficulty. From the day they are born until they die, He is always with them and protects them against their enemies. He is more reliable than anyone else, and always rewards them without expecting anything in return. This friend, of course, is our Lord, the believers' most intimate friend, Who purifies all those who place their trust in Him and promise them a distinguished life here and eternal wealth in the Hereafter.
Throughout their lives, people seek someone more powerful or wealthier upon whom they can rely in all circumstances. Yet while seeking such people, they totally forget our All-Mighty Lord, Who created them and meets all of their needs. They take Satan, who only leads them toward sin and hinders them from attaining Paradise , as their friend. This is the beginning of a gloomy world.
People who have faith and sincere faith in Allah, on the other hand, enjoy a good and honorable life. In this life, there is no room for failure, because Allah grants victory to believers as long as they remain committed to their religion and their words. Meanwhile, the actual reward is waiting for them in the Hereafter. Allah is the sole real protector of believers both in this world and beyond. His attribute of al-Walee is described in the following verses:
Allah knows best who your enemies are. Allah suffices as a Protector; Allah suffices as a Helper. ( Surat an-Nisa', 4:45)
And remember when two of your clans were on the point of losing heart and Allah was their Protector. Let the believers put their trust in Allah. (Surah Al ‘Imran, 3:122)
It is He Who sends down abundant rain, after they have lost all hope, and unfolds His mercy. He is the Protector, the Praiseworthy. ( Surat ash-Shura, 42:28)