God's an unfalsifiable claim, so there really isn't anything that could test that hypothesis.

Pretty much any scientific test/discovery that counters anything in a religious text whose adherents view the text as completely truthful and literal. But sciencey stuff might not have much of an effect on religious folks who view their texts less literally.

But anyways... heliocentrism, germ theory, gravity, evolution through natural selection, probably a huge chunk of the field of archeology, plate tectonics, radiometric dating, probably the written language at various points in human history (but that's not really a discovery), trans species organ transplants, decoding DNA, direct genetic engineering, CRISPR, radio telescopy.