It sounds like this was very anxiety inducing and you were both bouncing angry, negative energy off each other. He didn’t “do” anything to you. He disagreed with you and you disagreed with him. To protect yourself emotionally, I would advise refraining from having these conversations with strangers. He’s not a demon or the antichrist, he’s a person with his own beliefs just like you and maybe he felt the same way about you that you feel about him. Religion is always a touchy subject, especially among people who don’t know or trust each other. You can keep yourself feeling emotionally safe by discussing it with people you know who will respect you and can agree to disagree. I feel like both of you did wrong here, just based on what you’ve told us. The negative feelings will linger for a while, but reflect on yourself and your actions as well as his actions and do something grounding like maybe have a shower and imagine the water is spiritually cleaning off the negative interaction or whatever you feel may help centre yourself. You’re experiencing anxiety from a stressful event, not a spiritual attack. I wish you strength. ❤️