(Truly, Allah defends those who believe.) (Qur’an 22: 38)
In other words, He protects them from evil, both in this world and in the Hereafter. In this verse, Allah enlightens us, warns us, and gives us glad tidings. He repels evil from the believers in proportion to their faith. The evil of the disbelievers, the evil whispers of the Devil, the evil in their own selves, and the evil of their deeds --- all of these does Allah ward off from the true believers. When calamity falls, its burden will be lightened from them. Every believer has a share in this divine protection. Yet it varies according to one’s level of faith: some will receive less, others more.
Among the fruits of faith is that it gives solace to the believer in times of hardship.
(….and whosoever believes in Allah, He guides his hearth…) (Qur’an 64: 11)
This refers to the believer who is afflicted with hardship, who knows that it is from Allah and that it was written for him. He is satisfied and submits his will to what has been predestined for him.
Thus, the fatal blow of hardship will lose its effect on him because he knows that it came from Allah and that he will be rewarded for his patience.