Back in march/April of this year, I took part in two different text-based debates with atheists on a website called Debate.Org. To see how I debate actual atheists, I have provided links to the debates. Feel free to read them and see that you don't have to be scared of defending your faith.
My Debate with Candid_atheism on the reasonableness of God's existence
My debate with 64bithuman on how the gospels are the most reliable historical records about Jesus