Real won the semifinal 3-1.
Solari enthused: "He has blown everything out of the water: the lights, the nets, the stands... He had a spellbinding match, and showed who he is and what he is capable of. We are thrilled for him and now he needs to rest up and do it all again in the next match.
"It was a solid and serious performance from the whole group. We went into the game with our head screwed on we need do it all over again in just three days' time.
"Football is about the players. Those of on the side-lines try to help. But the person responsible for great performances is the player. Today Gareth gave his best, but has already given real joy to Real Madrid fans.
"He did it with his goals, which is what wins you football matches. Goals dominate football and Gareth knows how to score them. We hope he can continue to do it in every game. It is hard for him to score three goals each game, but he always gives his everything to the game."