Religious offense means hurting someone's feelings or beliefs related to their religion. It's like if you think something is super important, and someone else makes fun of it or says something mean about it, it might make you feel really bad. That's kind of like what religious offense means.
Religions are different beliefs and ways of thinking that people have, and they can be very important to some people. Everyone has the right to believe in whatever religion they want, and it's important to respect that. Sometimes people say or do things that hurt other people's beliefs or feelings, and that's not okay. It's important to be kind to others and their beliefs, even if we don't agree with them ourselves.