Let's come together in prayer for your friend. It is by the name of Jesus Christ that we have access to God.
Father we come before You in the name of Jesus Christ, we thank you for your grace and love over us. Lord, we lift up our friend. He is facing a significant health challenge and is about to undergo surgery. We pray for Your healing touch upon his body. We ask that You guide the hands of the surgeons and give them wisdom and skill. We pray that You will give him strength, peace, and a successful recovery.
Lord Jesus, we also pray for his family especially his daughter. Please comfort them and give them the strength and faith to trust in Your goodness. We ask that You will bless them with many more years together.
Father, we know that You are the Great Physician, and nothing is impossible for You. We claim Your promises in Your word, God, that "The prayer of faith will save the sick, and the Lord will raise him up; and if he has committed sins, he will be forgiven." James 5:15 WEB. We also stand on Your word in Jeremiah 30:17 WEB "For I will restore health to you, and I will heal you of your wounds,' says Yahweh".
Please, Holy Spirit, surround and fill our friend now in the moment of this trial, and cover him in Your peace that transcends all understanding.
Also if our friend has not done so please lead him to confess with his mouth the Lord Jesus and believe in his heart that God has raised Him from the dead, then he will be saved. For with the heart, one believes resulting in righteousness; and with the mouth confession is made resulting in salvation. For the Scripture says, Whoever believes in Him will not be disappointed. Romans 10:9-11 WEB.
In Jesus' name, we pray. Amen.
Also, remember to declare the goodness of God over your friend's life and encourage him with the word of God. Trust that God is faithful and that He will fulfill His promises. Be sure your friend continues to build his relationship with Jesus.