Jami` at-Tirmidhi 3565

Ali narrated, saying:“Whenever the Prophet (ﷺ) would visit an ill person, he would said:‘[O Allah,] make the harm go away, Lord of mankind, and heal him, You are the Healer, there is no healing except your healing, a healing that does not leave any sickness ([Allāhumma] adh-hibil-ba’sa rabban-nās, washfi antash-shāfi, lā shifā’a illā shifā’uka shifā’an lā yughādiru saqama).’”