Senior manager feeling insecure and wants to get me fired

My company is planning to fire me in-spite of my good performance. whenever anybody complains my manager that she is not performing, she always starts blaming me that my junior (Me) is not working nice not cooperating with me? The fear of being fired out is with me from the very first month as she has started to feel insecure and she thinks if I will perform nice than she(my manager) can be kicked out of the organisation, So has started complaining about me from the very first month of my joining. So , kindly help me and let me know how i can come out of this problem.
Regards,

Dear Sumi, Please come out of this "Fear Phobia" continue your good work-Do your Best & leave the rest.You are Employed in an organization & working for your Employer.As long as your Performance is satisfactory, nothing to worry.While you say that your immediate manager is feeling insecure about you, even you are also becoming insecure looking at your Manager.Stop worrying & focus on your Job.Try to introspect yourself & improve on Inter personal Skills

Dear Sumi12,
If your manager has engaged in the blame game then you may list out your duties and what quantum of work you have done in the past nine months or current calendar year. Specifically mention in numerical terms, what you could increase or decrease. Confront your manager with the facts.
Once your meeting with the manager is over, send the MoM to the MD of the company. This will help you to keep him in the loop. As of now, your MD is getting information that is provided by your manager. However, your side of the story does not reach to him. Therefore, it is better to be proactive.
Thanks,
Dinesh Divekar

Hi
I honestly faced similar situation at office. However, what i can suggest is keep records of all things done and achieved.
If possible, if you can quantify the work and also keep status report of works done, before joining and after joining, where you improved.
Ex: Say PF settlements, Full and Final Settlements, Hiring of resources, setting up the department etc.,
If there is anybody on top of your boss, you can show-case the same.
Also seek explanation, if they are trying for your ouster. Ask her write into you or show proof to support her claims. It can be one sided. Take time else to talk to her in private on one- to one. Ask her to guide, where she wants you to improve or how a particular work needs to be done. Don't take it as " Ego", ultimately, accept her as it is , as she is your boss. Which is natural to expect.
Ultimately , you are all in the same department and as a team , as long as you are all working together.
Hope this helps. You may also look at other avenue's in interim , if you wish to leave. Else, you are otherwise happy in company, just continue to do the good job. If
Best wishes.

Why do you worry if you are doing the work perfectly. In HR, things to be documented on mandatory to save you from anything.
Don't worry start searching for a job as its going make something good for you.