Albert Einstein was a preeminent physicist and is noted for some excellent quotes on the nature of God. Start discussion there on how science and faith are not contradictory.
Unless someone is open to a different version of creation it really will make no difference to them. They are sure they have the right answer and until something happens to make them listen, you probably cant.
pray God ask the holy spirit to give you the words to say (remember that Matt 10:19 says "Do not worry about what you will say, I will teach you in the hour of need") Then start by asking Does Physics either disprove or prove there is a god?
