Employment Law Questions? Ask an Employment Lawyer.
I am sorry this happened. I assume you mean harassed and you have options here!
You can pursue a complaint against the colleague and the company - demanding the colleague be terminated, reprimanded, or at least transferred away from you, given the hostile environment.
You may seek accomodation and damages from company for not taking appropriate action to protect you and subjecting you to injury
Practically, before considering a lawsuit, often having a lawyer reach out to management helps bring about a much faster resolution - saving you time and money