The Prophet (s) said: “Never gloat over the misfortune of your brother, for he may be freed from it and you may be the next victim.”
Al-Amaali by Sheikh al-Mufeed
Whoever says the following seven times after the morning prayer before saying anything else: “In the Name of God, the Most Gracious Most Merciful. There is no strength nor power but in, or by means of, God, the Exalted.” God will fend off seventy types of calamities from him- the simplest of which is leprosy.”
Hadith 1755 from the book Mishkatul anwar fi ghurur il akhbar