Eriksen suffered a cardiac arrest in Denmark’s EURO 2020 opener against Finland on Saturday.
The 29-year-old Inter Milan midfielder collapsed on the turf on the cusp of halftime and received lengthy treatment on the pitch by medics before being taken to hospital, where he is recuperating well.
Mourinho worked briefly with Eriksen during his time as Tottenham Hotspurs manager before the former Ajax Amsterdam midfielder moved to Italy.
"I cannot stop thinking about what happened," Mourinho told talkSPORT. "I think it's a day to celebrate, not to be sad.
"It was much more important than football but at the same time I believe that it also showed the good values of football.
"The love, the solidarity, family spirit. It was not just about his family, it was about the football family. Football bringing people together.
"I prayed yesterday, I cried yesterday, but how many millions did that around the world. I believe many because football can bring people together.
"Yesterday, for the wrong reasons football brought people together. In the end, we can celebrate Christian is alive.
"Of course, I didn't speak with him, but I spoke with Pierre-Emile Hojbjerg this morning and Pierre is very positive about Christian.
"The news is good, so I think it's a moment to celebrate."
