Abu Hurairah (may Allah be pleased with him) reports: A man came to the service of the Prophet (peace and blessings of Allah be upon him). He said: O Messenger of Allah! Last night a scorpion stung me in my bed. The Prophet (peace and blessings of Allah be upon him) said: If you had recited these words in the evening: “I seek refuge in the perfect words of Allah from the evil of whatever He has created,” then it (the scorpion) would not have harmed you.
Hadith Referenceصحیح ابن حبان / كتاب الرقائق / 1020
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الكلم الطيب» (33/ 23)، «التعليق الرغيب» (1/ 225 - 226).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم.