Slanderous Claims Protection

Hello I'm having the issue of someone making slanderous claims towards me. The person is saying that I created a Discord/Group chat with the purpose of spreading personal information about others and then deleted them. Is there anyway to prove I have never made such group chats or any discord server with them? This is affecting how others are interacting with me some of my friends believe it to be true because the person who is claiming these things also knows personal information and even was able to describe an image of something I should've only had. I never shared any information with this person and for some reason they know personal information of others, they may have suspiciously logged in to an account to get that info? Said person is also claiming all the info came from me and specifically that I was screen sharing with them, at first they said I was sharing screenshots and they shifted it too me screen sharing. Is there anyway to prove with out a doubt I have never made a discord with this intention ever, I never invited this person to any server or group chat.

If there isn't a way to prove this please add it