"I am hoping the gods grant me a miracle and that I am able to defend my dear, beautiful country," Eto'o told Cameroon Radio-Television (CRTV). "If this is not the case, I will always play my role as captain and especially as the big brother to push my young teammates to victory
He added: "During the first match of the World Cup against Mexico, I tried but after consulting the medical staff we realised that I needed a rest. Even in the ninth minute, I felt pain."
Eto'o suffered a right knee injury at the end of his club season with Chelsea. "He didn't train on Saturday or Sunday," said Cameroon coach Volker Finke. After facing Croatia - beaten 3-1 by Brazil in their Group A opener - Cameroon will face the hosts on 23 June.