Bollywood actor Vivek Oberoi says playing the role of slain leader Paritala Ravindra in Ram Gopal Varma's "Rakta Charitra" has been his most challenging, yet satisfying experience ever.

"Shooting the last and final day of RC ('Rakta Charitra')... feeling kind of bitter-sweet... so many amazing memories! What an incredible experience it's been... definitely the most challenging and most satisfying experience of my career as an actor, " Vivek posted on micro-blogging site Twitter.

The actor, who will soon get married to Bangalore girl Priyanka Alva, says he is lucky for having got this project, which is based on the life of Paritala Ravindra.

"I hope all of u like the film too... have given it my all... RGV seems to be at his focused best... saw some scenes at dubbing yesterday... in my humble opinion, RGV is brilliant... I consider myself so lucky to have had this experience, " added Vivek.