Cech faces a lengthy spell on the sidelines after undergoing surgery on a depressed fracture of his skull.
Cudicini was also concussed and carried off during the match but was released from hospital later on Saturday.
The Italian, however, is doubtful for Wednesday's Champions League home tie against Barcelona and Chelsea are likely to turn to third choice keeper Hilario.
What a very unfortunate name for a third choice keeper! If only his dad had been called Solidio or Leapio or something. I hope he is very very good. The headline writers will struggle if he messes up because it is too obvious. It is really best left to the last word of the article, as in this one.