For Barcelona vs Inter game will not be that easy as Inter can be happy also with a draw in this game so that can make things pretty difficult.
Yeah, it's going to be a tough match. If Barcelona wants to have a chance of being the group leaders, then they will have to win all the remaining matches and most importantly win with a high margin against Bayern Munich
Inter is not an easy team and beating them should be their only goal, if they're winning in the match and they get greedy they could risk conceding an equalizer, they should try to beat Plzen with a big score and not Inter or Bayern.