It shouldn't be that hard. Innocent victims aren't required. I'll do it. If god is real, he can't be too happy with me. I've been an atheist for over 50 years. What he could do is have me drop dead today. If I do that, it might not prove that there is a god, but it would lend at least some credence to the rumors of his existence.
I'll let you know tomorrow if he was interested in participating in this experiment. Since he isn't real though, he'll cop out, and a bunch of people will make excuses for him. But hey, maybe I'm wrong. I may be a typing dead man at this very moment.
I once said something similar to a theist and he told me I shouldn't tempt god. I told him I wasn't. Again, because there isn't one.
Hey, I'll settle for getting critically injured, perhaps paralyzed for life, or being a multiple amputee. Anything. If others can suffer in this world, I'm should get to too. Let me have it god. If you exist. Which you don't.