Depends if it is militant atheism or merely personal atheism.
Me, I view my and my tribe’s very existence, despite concerted efforts of the entire world (at various times) to destroy us, as proof of the G-d of Abraham, Issac, and Jacob.
Indeed, I view the world’s bizarre desire to kill my tribe (for no apparent reason) as proof of the world’s rebellion against G-d, and thus of G-d Himself. The world’s hatred of Israel is so bizarre and nonsensical that it almost must be supernatural.
(These are not the only proofs, of course -— for there can be no “proof” of such things, just feathers on the scale.)
It's only the religions that have spun off of Judaism's base that view it with vengeance, or used to. Because, in many ways more than one, the derivative religions based their existence on changing the status-quo of Judaism.
Sort of like the Protestant/ Catholic divide, or, the Shia/ Sunni divide. One thrives on denying the other.