Hazrat Salim narrates that Hazrat Abdullah bin Umar (may Allah be pleased with them both) said: Whenever a person sees someone afflicted by a calamity and recites this supplication: "All praise is due to Allah who has kept me safe from that with which He has afflicted you, and has granted me superiority over you and much of His creation," then Allah will not let that person be afflicted by that calamity, whatever it may be.