Husband filed divorce on grounds of desertion and cruelty

I am a christian woman married to christian man on 2nd June 2010(Love-arranged marriage). We had a baby on 4th July 2012. in teh year 2013, my husband moved from hyderabad to chennai stating he wants to earn money for his wife and child as his salary was less in hyderabad. Post that he travelled to kuawait, dubai etc on projects and came to hyderabad once in 6 months. In April 2016, he started talking about divorce and in August 2016 he told my parents he wants a divorce because he and i are incompatible. he stopped all communications from August 2016 till August 2017. I got a court notice for dissolutrion of marriage on 29th Aug 17 and asked to appear on 7th Sep 17. I got to know that he had filed for a divorce based on cruelty and desertion from my end. he has mentioned many points on mental torture thru words, actions and humiliations which is completely untrue. Please advice how do i prove that i am innocent and that i do not want this divorce.