Thank you for your question. 

Mbbs in india is a 5.5 year course. 

In countries such as russia, Philippines,  the duration is 6 years. 

The curriculum and the teaching is almost the same.

The only added subject is language of the particular country such as russian.

If you plan to return to india to practise then you must clear the screening test.

Fees is very less in russia, ukraine while in india its costly in private and very cheap in government medical college. 

Good luck