Musnad Ahmad Hadith 52

O Messenger of Allah, teach me something that I may say in the morning and in the evening and when I go to bed. He said: `Say: O Allah, Creator of the heavens and the earth. Knower of the unseen and the seen – or he said: O Allah, Knower of the unseen and the seen, Creator of the heavens and the earth - Lord and Sovereign of all things, I bear witness that there is no god but You; I seek refuge in You from the evil of my own self and the evil of the Shaitan and the shirk to which he calls people.” It was narrated that Ya'la bin `Ata' said: I heard 'Amr bin 'Asim bin ‘Abdullah... a similar report.