Hi , as per your query I would like to tell you that in order to study MBBS from Russia you need to be minimum 17 years of age on or before 31 December of  the year of admission . You need to score a minimum of 50%  which is an aggregate marks of physics chemistry and biology if you belong to u reserved category and 40% for the reseved   category from CBSE/ISC board or any other equivalent board of examination. As per the latest notice  by the MCI all those indian medical aspirants who are planning to  enrol in foreign medical universities  need to qualify NEET.
hope this helps