Anointing of the Sick
"We beseech you, Savior of all men, you that have all virtue and power, Father of our Lord and Savior Jesus Christ, and we pray that you send down from heaven the healing power of the only-begotten [Son] upon this oil, so that for those who are anointed . . . it may be effected for the casting out of every disease and every bodily infirmity . . . for good grace and remission of sins . . . " (The of Serapion 29:1 [A.D. 350]).
See more about the sacrament of anointing of the sick Here at catholic.com.