logic fails atheists

Atheistic notions slowly gained traction in certain intellectual circles in Europe following The Renaissance and The Reformation. There were some notions in ancient Greece but not of any significance.
Imagine now flock of believers suddenly being approached by a man few hundreds years ago who tells them,there is no God. They say,yes there is.He tells them you have to prove His existence for me to believe.
Imagine someone/new atheist/ coming to/you-believer/ and on approach telling you that you are wrong and demanding that is you/believer/who's duty is to prove to him that you are not wrong.Reminds me of justice system in communist Eastern Europe requiring you prove your innocence,if you could not then you were found guilty in 100% cases.
Proving Gods non existence belongs to atheists.