Arsenal manager Unai Emery says Mesut Ozil and Sead Kolasinac were "not mentally ready" to play against Lyon on Sunday.
The two players missed the 2-1 loss after they escaped unharmed from an attempted car-jacking last week.
"Every player is very important in the team, but also each moment and some circumstances give us a decision between the players and us," Emery told reporters.
"It's not a good moment to play because their mind is not now 100 per cent.
"It's a very personal circumstance and the most important thing now is that they can feel good, they can feel safe, they can feel with their family."
