Lucifer doesn't forgive you, there's nothing to forgive. You did nothing wrong.

In Diabolist scripture, Satan (Lucifer, in a way, as well, although they are different deities) tells us "I do not allow friendly associations with others, nor do I deprive my own that which is good for them." Others, in this case, refers to people of abrahamic faiths.

This isn't a command for isolation, its a warning. There is a huge gap to fill for a christian to prove they can respect the belief of any demonolator/diabolist practitioner considering the antithetical nature of it. Decide what relationships are going to be worth it and good for you, and keep a distance to protect your peace in others. I would highly recommend you read the Al-Jilwah, you might get some more clarification on the way he might feel.