يَا شَافِي اشْفِ أَنْتَ الشَّافِي لاَ شِفَاءَ إِلاَّ شِفَاؤُكَ
Transliteration
Ya Shafi ishfi antash-shafi la shifa'a illa shifa'uk
English meaning
O Healer! Grant healing. You are the Healer; there is no cure except Your cure.
When is it recited?
In times of illness.
Source
Bukhari, Tibb 38