Ash-Shaykh Muhammad bin Saalih al-Uthaymeen rahimahullah said when he was asked if the evil eye could affect a person even in his religion:
“It is possible for a person to be affected with the evil for any type of blessing… A religious person could get affected by the evil eye wherein he begins to be in a state of discomfort when performing ibadah or he begins to forget what he memorized… We ask Allaah to grant us salvation for its affects…”
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Being this is the case, a person always has between الوقاية أو الإصابة, either protecting himself by constantly making the prescribed dhikr or either performing ruqayah on himself by reciting faatihah and its likes.
AbdulFattaah Bin Uthman