You are still a person if you lose the job you once loved. Be loyal to your intact soul and health, withhold loyalty from a company that allows you to get hurt. The ultimate buffer to prevent harm is to be so cynical about work that they are lucky to rent you for the hours they do. At least the cynical put a higher value on their life outside work than bullied Targets do. They work for management.
Retaliation always seems to follow filing complaints.
Think before you file. Go right to BullyBusting if you're more mad than hurt and more motivated than frozen. Blow the lid off the silent epidemic. Everyone at work knows about the bully anyway. Maybe the others who have been targeted in the past will come to your side.