Need suggestion

As I work in one project but I found that my colleagues every time do politics with me and tell everything to Manager about me.. Most of the time I ignore,every time she try to take a credit in front of manager and with me behave like she is with me. I totally frustrated about this type of environment and now take decision that I put my papers.. Please suggest me is it right decision or wrong because I have no any offer but if try to hard I definitely catch.