I agree, it can be very frustrating to get feedback that you feel for whatever reason is unjust. That said, it's important to be aware of the PERCEPTION of you at work, because sometime perception is reality.
I had a 360 review in one company I worked for where 1 person had it in for me, honestly. What was funny was, that when I did the 360 review, it was really obvious, because 7 people saw me as I saw myself, and the one person's answers just kept coming up the opposite again and again. It made me realize also that there will be difficult people at every job, and it's important to be able to deal with everyone, while also knowing how to take criticism, and learn from it, and what is real and what is garbage.
Don't worry too much about the 360 review. agree with PP that you will get through it!