Authentic Supplication Number 032.

He (the Prophet) ordered a man to say 'Allahumma 'anta khalaqta nafsiya, wa 'anta tatawaffaha, laka mamatuha wa mahyaha, 'in 'ahyaytaha fahfathha, wa 'in 'amattaha faghfir laha, 'allahumma 'innee 'as'aluka 'al`afiyata (54).

Footnotes.
(54) O' my 'ilah You created my soul, and You exact it. Its death and its livelihood is to You. If You liven it then guard it, and if You mortify it then forgive it. O' my 'ilah I ask You pardon [meaning I ask that You spare me from afflictions, and grant me wellness].

Reporters.
Reported by Muslim, and Al-Albani included it in The Authentic of Good Sayings as #32.

Related Hadith(s)