This quick tip will explain how to put a stop to the display of event notifications from a specific contact on Facebook. This built-in feature will let you block event requests from specific users without blocking the users themselves.
Filter Event Requests on Facebook
Sign in to your Facebook account. Go to Settings > Blocking > Block event invitations and type the name of the desired user(s) in the Block invitations from field:
Moving forward, event requests from the blocked user(s) will be ignored.