أَعُوْذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ شَرِّ مَا خَلَقَ

A'oodhu bikalimaatil-laahit-taammaati min sharri maa khalaq

I take refuge in Allah's perfect words from the evil He has created. Abu Huraira (RA) reported that a person came to Allah's Messenger (ﷺ) and said:" Allah's Messenger (ﷺ), I was stung by a scorpion during the night. Thereupon he said: Had you recited these words in the evening. (The dua is mentioned above) that would not harm you

Reference: Muslim: 2708, 2709