Resignation during probation period

Hi , I am working for a private firm , I have completed 5 months of probation out of six. I have a better opportunity now, for that I have to resign. In my offer letter it is mentioned I have to pay 1 lac if I leave during probation period and there is no mention of notice period during probation as specific however general notice period is two months.since we have a e exit option when I check there it shows my notice period to be two months In that case I ll exceed the said 6 months of probation period. My main concern is relieving letter (am I eligibleto get it during probation), i am ready to serve notice period or to pay but since I am ready to serve notice period then it will exceed 6 months or the other scenario company itself tell me not to serve notice period and just ask for money in that case it is employer asking me not to complete 6 months so I believe it should not come upon me to pay.. I hope I am able to make understand,would need clarity on this. I am ready to the terms and condition of agreement