Dua for Protection from Diseases
Anas (Radhi Allah Anh) said: Prophet Muhammad (Sal Allahu 'Alayhi Wa Sallam) used to make this dua to seek Allah's protection from diseases.
اللّٰهُمَّ إِنِّي أَعُوذُبِكَ مِنَ الْبَرَصِ ، وَالْجُنُونِ ، وَالْجُذَامِ ، وَمِنْ سَيِّءِ الْأَسْقَامِ
Allahumma inni a'oodhu bika minal-barasi, wal-junooni, wal-judhaami, wa min sayyi'il-asqaami
O Allah! I seek refuge in You from albinism, insanity, leprosy and from evil diseases.
[Abu-Dawood]