Didier Drogba hounded referee Ovrebo after the final whistle
Didier Drogba will miss at least four European matches after being banned for his reaction to Chelsea's Champions League semi-final defeat by Barcelona.
The striker was banned for six games, with two suspended for two years.
Team-mate Jose Bosingwa was banned for three European games, with a further one-match ban also suspended.
Chelsea have three days to appeal and assistant coach Ray Wilkins told BBC Sport he was sure a decision would be made on Thursday.
Both players were found guilty of making insulting comments to the referee by Uefa at the end of the game at Stamford Bridge on 6 May where Barcelona scored an injury-time equaliser which eliminated the Blues from the competition.
Terry urges Chelsea to appeal against Drogba ban
The club was also fined £85,000 for the improper conduct of its players and the throwing of missiles by their fans.
"They're severe, we do play in an emotional game and it was an emotional evening," Wilkins, speaking about the punishments, told BBC Radio 5 Live.
"To lose a goal so late in a Champions League semi-final was galling to say the least and players react in different ways - Didier reacted and Jose reacted, and we have been punished.
"The club will digest all the information they can and I'm sure a decision will be taken today what we're about to do."
The Blues went out of the tournament after a series of disputed decisions by referee Tom Henning Ovrebo.
He turned down a host of strong penalty appeals from Chelsea during the 1-1 draw in the second leg at Stamford Bridge, which saw Barca go through on away goals.
Drogba and several other players surrounded Ovrebo after the final whistle to remonstrate with the Norwegian.
The Ivorian continued his verbal attack even after being cautioned, and had to be restrained as Ovrebo went down the tunnel.
Rob Faulkner, Uefa's head of communications, told Radio 5 Live: "The actions of the players were certainly not of a sporting nature.
"Everything has been taken into account. The club will be informed officially in writing and then they have three days in which to consider whether to appeal or not."
Faulkner added it was a "fairly strict but fairly appropriate" level of punishment.
He insisted the disciplinary panel took into account the importance of the game and the fact that the match was settled in such dramatic fashion, with Andres Iniesta's injury-time goal sending Chelsea out.
But he added: "We have to set certain standards. We do have a 'Respect' campaign and the Uefa president (Michel Platini) is instrumental behind that.
"The players are key to that, in setting a good example both on and off the pitch. The club obviously has a responsibility for the way their players behave as well.
"All in all, that's the reasoning for the decision."
Drogba had stated that he would accept any punishment given to him by Uefa over his actions.
"My behaviour was not what Uefa and everyone wants to see in a football stadium," Drogba said ahead of the governing body's verdict.
"It's not easy but I think that whatever I did and the decision they take I will accept it.
"I will do my suspension and, after that, I will come back stronger."
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.