Uefa has rejected the Czech Republic's request to review the yellow card that captain Pavel Nedved received against Denmark in the quarter-finals.
Nedved was cautioned for fouling Danish winger Jesper Gronkjaer, but most observers felt the Dane had dived.
And the Czechs asked Uefa "to have another look at the film evidence and reconsider" the incident.
But Uefa denied the move and Nedved will be banned for the final if he is booked again in the semi-finals.
The Juventus star missed last year's Champions League final because of suspension but will not be rested by Czech coach Karol Bruckner.
Bruckner admitted: "He will play against Greece, of course. We can't play without him."
Nedved said: "I know I have to be very careful or I could miss the final - if we go through.
"But also I know that it is a tough match in the semi-finals and it is difficult because there is a lot of pressure.
"I want to give a total performance, with full commitment,
and it is difficult to be very careful when you feel like this.
"I want to be running and running but I know I need to