Carey Price and Marc-Andre Fleury have been two of the best goalies in the league for over 10 years now. While they've never met in the playoffs with Price in net (Halak played in 2010), they've been teammates on Team Canada in the past and definitely have a huge respect for each other.
We've seen players like Alexander Ovechkin show his respect for Price, we heard Crosby and Plekanec texted him to say how great it was to see him back on the ice, and now we see Fleury showing Price his respect as well.
This just goes to show you that even if the fans do not believe Price has been the best goalie in the league, he definitely has the respect from all the players in the league, the best players at that.