Musannaf Ibn Abi Shayba 21:83

Ibn Numayr narrated to us, from al-A’mash, from Mujahid, from Ibn Damra, from Ka’b, who said: When a man leaves his house, the devil meets him. If he says, "In the name of Allah" (Bismillah), the angels say, "You have been guided." If he says, "I rely upon Allah" (Tawakkaltu ‘ala Allah), they say, "You have been sufficed." If he says, "There is no power and no strength except by Allah" (La hawla wa la quwwata illa billah), they say, "You have been protected." Then the devils say to one another, "What path do you have over one who has been sufficed, guided, and protected?"