Here is a sample prayer for a fast recovery that you can use as a guide:
Heavenly Father,
I lift up my friend/family member who is sick today. Please be with them and bring them your healing and strength.
I pray that you would restore their health and bring them a fast recovery. Please give them courage and hope as they face this difficult time.
I pray for their caregivers, that you would give them wisdom and compassion as they care for my friend/family member.
Please be with my friend/family member in a special way, and let them know that they are not alone.
In your holy name I pray, Amen.