Religious based spiritual harassment

Is there any good techniques to keep religious based harassment dogs on a leash? I realize that many of the modern religious cults permeate most aspects of society and have managed to infiltrate the minds of many people. In my experience the christian based cults are the worst at this. They like to constantly annoy and perform weird spiritual nonsense against people while justifying all double standards with arbitrary interpretations of fictional scripts. What are some techniques people have used to keep them out of your life as much as possible?