England coach Roy Hodgson says they cannot take lightly tonight's opponents Ukraine.
England need only a point to reach the last eight but Hodgson is refusing to look further than Tuesday's testing encounter.
He said: "We have already seen some good teams go out of this tournament. We have given ourselves a chance of going through but guarantees do not exist.
"The team believe in themselves and if the performances have increased expectations then that's good.
"But we are not getting carried away and know we've got a difficult test tomorrow evening."
Hodgson knows England will have to overcome a passionate atmosphere in the Donbass Stadium but believes his players have the experience to cope with such a challenge.
"The players in this squad all play for top clubs, play in the Champions League, play in these sort of matches all the time," he added.
"We know the fans will be right behind the Ukraine but our players are capable of dealing with such challenges."