The Prophet (ﷺ) used to treat some of his wives by passing his right hand over the place of ailment and used to say,

أَذْهِبِ الْبَاسَ رَبَّ النَّاسِ، وَاشْفِ أَنْتَ الشَّافِي، لاَ شِفَاءَ إِلاَّ شِفَاؤُكَ، شِفَاءً لاَ يُغَادِرُ سَقَمًا

Remove the harm, O Lord of mankind and heal him, for You are the Healer and there is no healing except Your healing, with a healing which does not leave any disease behind

Adhhib il-ba’s, Rabbi l-naas washfi anta al-Shaafi laa shifaa’a illa shifaa’uka shifaa’an laa yughaadir saqaman