By this isnad from Muhammad b. Abi `Umayr from Aban b. `Uthman from Muhammad b. Sa`id from `Atiyya al-`Awfi from Abi Sa`id al-Khudri from the Prophet (s). He said:

Whoever says: “in the name of Allah (bismillah)” when he leaves his house, the two angels say: “You have been guided.” When he says: “there is no ability nor power except by Allah (la hawla wala quwwata illa billah)”, they say: “You have been safeguarded.” When he says: “I rely on Allah (tawakkaltu `alallah)”, they say: “You have been sufficed.” Then, Satan will say: “How could I handle a worshiper who is guided, safeguarded, and sufficed?!”