15 verses have
turn
in Edition Clear Qur'an by Talal Itani / Aal-i-Imraan (The Family of Imraan)

3:20If they argue with you, say, “I have surrendered myself to God, and those who follow me.” And say to those who were given the Scripture, and to the unlearned, “Have you surrendered?” If they have surrendered, then they are guided; but if they turn away, then your duty is to convey. God is Seeing of the servants.

3:23Have you not considered those who were given a share of the Scripture, as they were called to the Scripture of God to arbitrate between them; then some of them turned back, and declined?

3:32Say, “Obey God and the Messenger.” But if they turn away—God does not love the faithless.

3:55God said, “O Jesus, I am terminating your life, and raising you to Me, and clearing you of those who disbelieve. And I will make those who follow you superior to those who disbelieve, until the Day of Resurrection. Then to Me is your return; then I will judge between you regarding what you were disputing.

3:63But if they turn away—God knows the corrupt.

3:64Say, “O People of the Book, come to terms common between us and you: that we worship none but God, and that we associate nothing with Him, and that none of us takes others as lords besides God.” And if they turn away, say, “Bear witness that we have submitted.”

3:72Some of the People of the Book say, “Believe in what was revealed to the believers at the beginning of the day, and reject it at its end, so that they may return.”

3:82Whoever turns away after that—these are the deceitful.

3:83Do they desire other than the religion of God, when to Him has submitted everything in the heavens and the earth, willingly or unwillingly, and to Him they will be returned?

3:100O you who believe! If you obey a party of those who were given the Scripture, they will turn you, after your belief, into disbelievers.

3:111They will do you no harm, beyond insulting you. And if they fight you, they will turn around and flee, then they will not be helped.

3:144Muhammad is no more than a messenger. Messengers have passed on before him. If he dies or gets killed, will you turn on your heels? He who turns on his heels will not harm God in any way. And God will reward the appreciative.

3:149O you who believe! If you obey those who disbelieve, they will turn you back on your heels, and you end up losers.

3:152God has fulfilled His promise to you, and you defeated them by His leave; until when you faltered, and disputed the command, and disobeyed after He had shown you what you like. Some of you want this world, and some of you want the next. Then He turned you away from them, to test you; but He pardoned you. God is Gracious towards the believers.

3:155Those of you who turned back on the day when the two armies clashed—it was Satan who caused them to backslide, on account of some of what they have earned. But God has forgiven them. God is Forgiving and Prudent.