Varane's equaliser sees Real go to Barca for the second-leg with the Copa del Rey semifinal still alive.
"I felt very good. I'm glad I played the game, it's always difficult to play against Barcelona and the team played well. It has been my best match in the shirt of Real Madrid and I want it to stay that way," he said.
"I want to give my best at Real Madrid and for that I tried my best without putting too much pressure on myself.
"(Jose) Mourinho congratulated me and all my teammates too. They were happy for me and for the goal."