أَعـوذُ بِكَلِمـاتِ اللّهِ التّـامّـاتِ مِنْ شَـرِّ ما خَلَـق (ثلاث مرات إِذا أمسى
A`ūdhu bikalimāti-llāhit-tāmmāti min sharri mā khalaq.
I seek refuge in the Perfect Words of Allah from the evil of what He has created. (Recite three times in Arabic in the evening.)
Whoever recites this three times in the evening will be protected from insect stings, Ahmad 2/ 290, An-Nasa'i, 'Amalul-Yawm wal-Laylah no. 590, At-Tirmidhi 3/187, Ibn As-Sunni no. 68. According to Al-Albani, Ibn Majah's (2/266) chain of transmission is sound (Sahih), and following Ibn Baz 45, At-Tirmidhi's report is good (Hasan).