Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: A man from the tribe of Aslam said, "I could not sleep last night." The Prophet Muhammad (peace and blessings be upon him) asked, "Why is that?" He replied, "A scorpion stung me." The Prophet Muhammad (peace and blessings be upon him) said, "If you had recited these words in the evening: 'I seek refuge in Allah from the evil of what He has created,' then, inshaAllah, that (scorpion) would not have harmed you."
Hadith Referenceصحیح ابن حبان / كتاب الرقائق / 1021
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - انظر ما قبله.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم، رجاله ثقات رجال الشيخين غير سهيل بن أبي صالح، فمن رجال مسلم.