Ronaldo, who left Real Madrid in 2018 to join Juventus, recently gave his own take on the battle he faces with Messi.
Speaking to DAZN, Messi said: "It was a special duel and it will remain forever because it lasted many years and it is not easy to maintain certain levels for a long time".
But while both Messi and Ronaldo are world-renowned for their competitiveness and desire to win, the former confessed to feeling some satisfaction from the duel.
During Ronaldo's time in the Spanish capital he scored 450 goals in 438 matches, while Messi netted 472 goals in 476 appearances across all competitions.
Argentine ace Messi, who edged one ahead of Ronaldo in the Ballon d'Or stakes by picking up his sixth accolade at the end of past year, said the fact that the Portuguese was playing on the opposing team in the El Clasico encounters made them all the more special for him and the fans.
"Competing on an equal footing for so many years, I think it will remain forever".
"I think that the fans also enjoyed it, be they Madrid or Barca supporters, and those who just like football in general will also have enjoyed it".
"Obviously, when Cristiano was at Real Madrid, the matches were always special", Messi added. "It was all the more special because of what those game mean but those times are behind us and things go on, it's what it is". "Now, we have to look ahead to the future".
The pair battled it out for club and personal honours during the 2010s as Barcelona and Real Madrid rivaled each other for the La Liga and Champions League titles.