[1]Say "Masha'Allah" when admiring something — it prevents the evil eye. (Qur'an 18:39) [1]Seek refuge with Allah from the envier when he envies. (Qur'an 113:5) [2]Burn 'ud (oud) or use ruqyah for treatment of the evil eye.
[1]Give ghusl to the envier if the victim is known — the Prophet commanded it. (Muslim 2189) [2]Praise only with "Masha'Allah la quwwata illa billah." (Qur'an 18:39) [2]Conceal your blessings — do not flaunt wealth, children, or beauty unnecessarily.
[1]Recite the morning and evening adhkar — they are a fortress against harm.