Registerd will

When did you disclose the "Will" exectued by your grandfather for his self-acquired property in your favour ?

Whether you are resident of either of Presidency Town ?

What is the basis for filing suit for partition by your father and his sibling(s) ?

What is the locus standi of your sister claiming to have share in the subject property ?

Incomplete information cannot lead to form proper opinion to oblige you.

Why did you remain silent all along till now without claiming the property if it was bequeathed to you?

You can do it now also 

I was not aware of the will i found it after my fathers death ... 

And now along with me my sisters have name on the document as after death of my father , my sisters put on thear name on property but i found the will it is registerd  sisters claiming the same propert by partition suit filed against me for the same property 

Yes,you can claim properties on basis of will.