Jami` at-Tirmidhi 3492

Shakal bin Humaid said:"I came to the Prophet and said: 'O Messenger of Allah, teach me a way of seeking refuge so that I may seek refuge by it." He said: "So he took my hand and said: 'Say: O Allah, indeed I seek refuge in You from the evil of my hearing and the evil of my sight, and the evil of my tongue and the evil of my heart, and the evil of my semen (Allāhumma innī a`ūdhu bika min sharri sam`ī wa min sharri baṣarī, wa min sharri lisānī, wa min sharri qalbī, wa min sharri maniyyī)