Well, a fairly trivial example would be some fundamentalist Christians' religiously inspired belief that Earth is only 5700 years old, and the rest of the points made in the Doonesbury cartoon. All last week I listened to a daily Bible radio show where the preacher went through all that in exhausting detail -- why the fossil record is really due to Noah's flood rather than slow deposits over eons, etc., etc.
All that, I would say, is subject to objective disproof.
Another, maybe better example is the pretty convincing body of empirical evidence that sexual orientation is not a willed choice. That evidence, taken together with secular moral reasoning following any of the various schools of secular ethical philosophy that I know of, leads to the conclusion that religious (or any other) condemnation of homosexuality, or efforts to suppress its expression are immoral, unethical and inhumane.
Now, if you want to return yet again to quibbling about scientific method, and the impossibility of absolute certainty as undermining the usefulness of trying to know the world on the hard-won insights of Ockham and Bacon, then we just may not have enough common ground to have any meaningful discourse.