The Arsenal left back said "no words can soothe Nasri", who has improved tremendously since he recovered from the injury that sidelined him at the start of the just concluded Barclays Premier League campaign.
France coach Raymond Domenech, announced his 30-man provisional squad ahead of next month' World Cup to be staged in South Africa with in-form midfielders Samir Nasri, Patrick Vieira and Real Madrid forward Karim Benzema the surprise exclusions.
Sagna can't believe the man that gave his friend the opportunity to make a name for himself at the Under 20 level, will be the one to dash his World Cup hopes.
The 27-year-old said of the players that didn't make the provisional squad.
"They must be surprised and dissapointed.
They are among the players who are regularly called up."
Sagna wants Arsenal fans to take solace from the knowledge that Abou Diaby, Gael Clichy and William Gallas will be part of the squad to South Africa.
"It's great to see so many Arsenal players but the news of Nasri has put things in perspective. In these moments there is little one can say.
I have not yet called him but no words can soothe him. He misses a World Cup."
It's quite unfortunate that Nasri hates to see Domenech being criticised by the media.
He came to the defense of the gaffer, when he was being criticised unfairly by a discontented portion of the supporters: "He's a great coach," Nasri replied when asked about the gaffer.
"I have an excellent relationship with Domenech, but some people really don't understand him. It's a pity because he is a great man and doesn't deserve such treatment."
Anyway, it's a provisional squad lets hope he changes his mind.