"'Krrish 3' is one of Hrithik Roshan's career's best performance," Vivek said here in an interview.
"To play three characters - Krishna, Krrish and Rohit and to play them so differently in one film...especially there are scenes where they (Hrithik's characters in the film) are talking to each other and the performances are so beautifully done that they look like different people...It is an outstanding performance," added Vivek.
Directed by Rakesh Roshan, "Krrish 3" is the third film in the franchise that began with "Koi Mil Gaya" in 2003. It also features Priyanka Chopra and Kangana Ranaut.
Vivek even recalls an incident when during the dubbing of the film, he became teary eyed after watching Hrithik's performance in one of the scenes from the movie.
"When I was dubbing for the film, there was a very emotional scene of Rohit, being played by Hrithik in the film and his performance and emotion in that scene was so deep, so beautiful that it touched my heart deeply. I was choked in that moment," recalled the 37-year-old.
"I couldn't speak, there were tears in my eyes. I remember stopping the dubbing (in between), came out and called up Hrithik and said,' I love you man, what a performance'," he added.
"So to all the fans of Hrithik out there, I would like to say watch out for 'Krrish 3'. It is probably the best performance of his career as yet," Vivek said.
"Krrish 3" releases Nov 4.