It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "O Imran, say: 'Allahumma inni astahdika li-arshadi amri, wa astajiruka min sharri nafsi' (O Allah, I ask You to guide me to the soundest course in my affair, and I seek Your protection from the evil of my own self)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15530