It was narrated that Abu Hurayrah said: A man came to the prophet (s.a.w.) and said, “O Messenger of Allah, I am suffering because of a scorpion that stung me yesterday.” He said, “If you had said in the evening, ‘A’oodhu bi kalimaat Allah hil-taammah min sharri ma khalaqa (I seek refuge in the perfect words of Allah from the evil of that which He has created),’ it would not have harmed you” .
In a related hadith, Khawlah bint Hakeem Al-Salamiyyah said: “I heard the prophet (s.a.w.) say: “Whoever makes a stop in some place, then says, ‘A’oodhu bi kalimaat Allah il-taammah min sharri ma khalaqa (I seek refuge in the perfect words of Allah from the evil of that which He has created),’ nothing will harm him until he moves on from that place” (narrated by Muslim, 2708).