The "Band Baaja Baaraat" actor essays Maratha warrior Peshwa Bajirao I in the historical drama, directed by Sanjay Leela Bhansali.
On the 315th birth anniversary of Peshwa Bajirao I, Ranveer took to Twitter and shared that he is honoured on playing the 18th century character.
That apart, he shared: "A lot of you are wondering why I've been MIA (missing in action) for so long... it's because I've been completely immersed in 'Bajirao...'
"It's difficult and all-consuming... But I must admit, never before have I enjoyed performing this much."
He also extended an invitation to his fans, followers and friends on the social media platform to show support to the movie when it hits the screens on December 18.
"You are all cordially invited this December to witness the SLB Magic on the big screen," added the actor, who shares screen space with actresses Deepika Padukone and Priyanka Chopra in "Bajirao Mastani".
Mastani's role is essayed by Deepika, while National Award winner Priyanka portrays Kashibai, the first wife of Peshwa Bajirao.