Security measures will be significantly increased for matches around Europe, including Spain's El Clasico, following the Paris attacks last Friday.
At least 1,000 police will be present as Real Madrid host Barcelona on Saturday, double what is usually deployed for the match.
Ligue 1 leaders Paris St-Germain will wear a special kit with 'Je Suis Paris' below their crest for three games.
Coach Laurent Blanc said Saturday's trip to Lorient would be "hard".
"The players are affected. Not just those of PSG. We've done psychological work with them," said Blanc.
"Life goes on but it's easier said than done. It will be hard to play football this weekend but we have to do it."
French domestic football resumes on Friday as Nice host Lyon and extra security will be enforced around Europe's leagues, as well as tributes such as playing of the French national anthem.
The Stade de France was among the venues targeted during last Friday's attacks in the capital, as three people blew themselves up near the stadium, where France were playing Germany in a friendly.
The meeting between Spain's top two sides will also see 1,400 private security guards, plus the municipal police.
Spain's secretary of state for security Francisco Martinez said: "We are on anti-terrorist alert four (with five a very high risk) and there will be extensive security so as to guarantee that the match takes place with complete normality."
live streaming real madrid vs barcalone match en direct