This is the perfect time to explain that you are different because you are a christian. You believe in living differently than other people because of your religion.
[header] How to promote one's religion or faith [title] Live your faith. [step] The way you act should reflect the things you believe in your heart. " actions speak louder than words " so they say.... when people notice a difference in your actions than everyone else's they will be drawn to ask how and why you are different.