Here are the duas for healing and shifa, as mentioned in the sources:
Dua for Shifa
ุงููููููู ูู ุฑูุจูู ุงููููุงุณู ุฃูุฐูููุจู ุงููุจูุฃูุณู ููุงุดููู ุฃูููุชู ุงูุดููุงููู ููุง ุดูููุงุกู ุฅููููุง ุดูููุงุคููู ุดูููุงุกู ููุง ููุบูุงุฏูุฑู ุณูููู ูุง
Transliteration:
Allahumma Rabban-naas adhhibil-baโsa washfi Antash-Shaafi laa shifaaโa illaa shifaaโuk shifaaโan laa yughaadiru saqamaa.
Translation:
“O Allah, the Lord of mankind, remove the difficulty and bring about healing as You are the Healer. There is no healing except Your healing, a healing that will leave no ailment.”[1][3][4
Alternative Version
ุงููููููู ูู ุฑูุจูู ุงููููุงุณูุ ู ูุฐูููุจู ุงูุจูุฃุณูุ ุงุดููู ุฃููุชู ุงูุดููุงูููุ ูุงู ุดูุงูููู ุฅููุงูู ุฃููุชูุ ุดูููุงุกู ูุงู ููุบูุงุฏูุฑู ุณูููู ูุง
Transliteration:
Allahumma Rabban-nasi, adh-hibil-ba’sa, ishfi Antash-Shafi, la shifa’a illa shifa’uka, shifa’an la yughadiru saqaman.
Translation:
“O Allah, Lord of mankind, remove this illness, Cure You are the Healer. There is no healing except Your healing, a healing which does not leave behind any illness.”[3][4
Additional Dua
ุฃูุณูุฃููู ุงูููููู ุงููุนูุธููู ู ุฑูุจูู ุงููุนูุฑูุดู ุงููุนูุธููู ู ุฃููู ููุดููููููู
Transliteration:
As’alu Allah al ‘azim rabbil ‘arshil azim an yashifika.
Translation:
“I ask Allah, the Mighty, the Lord of the Mighty Throne, to cure you.”[3]