heres the direction I would take this argument:
me : I believe God exists
you: What evidense do you have of your claim
me:What evidense do you have of anything you think you know
you:I rely on scientific evidence
me: how many double-blind studies have you performed?
you: well none, but I read about them
me: so you rely on writers you don't know to describe research you don't fully understand
[citation needed], performed by people who often have financial incentives
[citation needed] to mislead you?
you: you have exposed me for the hypocrite and fraud that I am, ill be on the lawn.