Ferland Mendy and Fede Valverde were the latest senior players to drop out, leaving Zidane with very few available for the match.
"We're going to get out of this situation," Zidane said on the injury crisis.
"We don't have limits. We're going to keep fighting until the end of the season.
"Mentally, we're good. We have to rest well and keep moving forwards.
"It is what it is. I have to congratulate the players. We have to keep going."
As a result of the injury crisis, youngsters like Victor Chust, Antonio Blanco and Sergio Arribas all got game time against Getafe.
"They've got big futures," Zidane said on the younger players.
"They're very solid, very good players. Chust had a great game.
"The academy players are always on hand and they've got a future.
"I'm happy for all the players. Defeat is to surrender, the rest is a journey."