The winger suffered the problem during a training session ahead of the Premier League encounter with Stoke and missed the 2-1 victory.
Chelsea winger Eden Hazard is facing a spell on the sidelines after he pulled out of worldwide duty with Belgium due to a calf injury, and he might not return in time for the Premier League fixture against Manchester City on April 5.
The injury means the Belgium captain will be could miss Chelsea's match against Crystal Palace when they meet April 1.
The former Player of the Year has not travelled with the Belgium squad during the worldwide break.
The former PFA Player of the Year will return to London this week to be assessed further by the Blues' medical staff, although the injury is considered to be minor, and to begin his recovery.
The 26-year-old forward sat out the 2-1 win at Stoke on Saturday and will now miss both the World Cup qualifier with Greece on Saturday and the friendly with Russian Federation on 28 March.
Chelsea are ten points clear at the top of the Premier League table.
'But he will not play against Greece. We are going to follow the injury. If you want to be a good team, you have to absorb everything.
"Eden's absence is obviously a big blow, but it will be interesting to see how we deal with it", Martinez said at a news conference.