Sackhoff plays the role of Dahl, a sniper woman-cum-mercenary on the hunt for killing Diesel's character Riddick.
Sackhoff is said to have done some stunning action scenes in the movie.
"She came in guns blazing to play the role of Dahl, which I think is extremely sexy and formidable," Diesel said in a statement.
Written and directed by David Twohy, "Riddick" is a dark action-packed science fiction film, packed with breathtaking battle sequences. PVR Pictures is releasing the movie in India in four languages - English, Hindi, Tamil and Telugu.