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

3:168Those who said of their brethren, as they stayed behind, “Had they obeyed us, they would not have been killed.” Say, “Then avert death from yourselves, if you are truthful.”

3:187God received a pledge from those who were given the Scripture: “You shall proclaim it to the people, and not conceal it.” But they disregarded it behind their backs, and exchanged it for a small price. What a miserable exchange they made.