From The Book of Common Prayer

For a Sick Person

O Father of mercies and God of all comfort, our only help in time of need: We humbly beseech thee to behold, visit and relieve thy sick servant N. for whom our prayers are desired. Look upon him with the eyes of thy mercy; comfort him with a sense of thy goodness; preserve him from the temptations of the enemy; and give him patience under his affliction. In thy good time, restore him to health, and enable him to lead the residue of hislife in thy fear, and to thy glory; and grant that finally he may dwell with thee in life everlasting; through Jesus Christ our Lord. Amen.

For Recovery from Sickness

O God, the strength of the weak and the comfort of sufferers: Mercifully accept our prayers, and grant to your servant N. the help of your power, thathis sickness may be turned into health, and our sorrow into joy; through Jesus Christ our Lord. Amen.

or this

O God of heavenly powers, by the might of your command you drive away from our bodies all sickness and all infirmity: Be present in your goodness with your servant N., that his weakness may be banished and his strength restored; and that, his health being renewed, he may bless your holy Name; through Jesus Christ our Lord. Amen.