Reported by `Uthman bin `Affan (RA): The Messenger of Allah (peace be upon him) said,
"He who recites three times every morning and evening:
`Bismillahil-ladhi la yadurru ma`as-mihi shai'un fil-ardi wa la fis-sama'i, wa Huwas-Sami`ul-`Alim (In the Name of Allah with Whose
Name there is protection against
every kind of harm in the earth or in the heaven, and He is the All-Hearing and All-Knowing),' nothing will harm him.'' [Abu Dawud and Tirmidhi].