This whole line of reasoning is absurd. TYFYT'sThe tricky part about drawing such lines is that it's easy to become like the Pharisees.
But you could argue that by giving food and clothing to people with beliefs you don't like, you have enabled them to rebuild their church building that you don't like, since that is x hundred dollars that they now don't need to spend on food and clothes. You have freed up their money that they can now use on rebuilding. The end result will be the same, and if hindering their efforts to rebuild their chapel was your goal, you have failed.