Dear beloved Christians? What do I do if my college lecturer is undermining my faith in God? (Christians only)?

By seeking Gods face and continuing to read your Bible. You should read the 23 Psalm. Ask God to give you strength to fight away the enemy and when the enemy try to attack plead the blood of Jesus and the enemy will flee. You just have to get that relationship with God and know that He is your rock, fortress, and strength and that God will fight all your battles. The enemy will come and try to defeat you and the Bible says that once you've given your life to Christ the enemy will try to bring seven more demons to dwell in you but you have to get strength and put on the whole armor of God.