What is the best response to "Without god there is no truth"?

I have come across this argument on tiktok, from Jason and Tab Mitchell, tiktok christians. If you are familiar with them. Was attacked by it on a christian live, where Mitchell put the prompt "Atheists are running from god", when I argued against them. It is basically, truth comes from god, or without god there is no truth.I didnt know how to respond. What is the best response to this?