Narrated AbuHurayrah:

A man who was stung by a scorpion was brought to the Prophet (ﷺ). He said: Had he said the word: "I seek refuge in the perfect words of Allah from the evil of what He created, "he would not have been stung, or he said, "It would not have harmed him."

حَدَّثَنَا حَيْوَةُ بْنُ شُرَيْحٍ، حَدَّثَنَا بَقِيَّةُ، حَدَّثَنِي الزُّبَيْدِيُّ، عَنِ الزُّهْرِيِّ، عَنْ طَارِقٍ، - يَعْنِي ابْنَ مُخَاشِنٍ - عَنْ أَبِي هُرَيْرَةَ، قَالَ أُتِيَ النَّبِيُّ صلى الله عليه وسلم بِلَدِيغٍ لَدَغَتْهُ عَقْرَبٌ قَالَ فَقَالَ ‏"‏ لَوْ قَالَ أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّةِ مِنْ شَرِّ مَا خَلَقَ لَمْ يُلْدَغْ ‏"‏ ‏.‏ أَوْ ‏"‏ لَمْ تَضُرَّهُ ‏"‏ ‏.‏