How does one protect themselves from Sin? Well, he has a plethora of weaknesses to abuse(Sin: Hey hey hey hey).My favorite is his lack of resistance to Mind affecting/altering things. But if you aren't some mage or alchemist, and need to get away quickly, perhaps try kicking or pulling on a few things. You can even use your phone's flash and run away with a souvenier. But run quick. But, if you want to make sure he's a good boy at all times, just keep Zozo near (and safe. Kidnapping and threats give the opposite effect).