Depends what you mean by 'go through'. It would see us at least third - so would drop into the conference play-offs.
We'd be on 8 points. If we then lost to Marseille, AEK could catch us by beating Ajax, and would finish above us on head to head.
Not quite (but yes in reality)
Lose v Athens, draw v Marseille and we're third at least - but could actually come top if Ajax beat them both and our draw is 0-0 or 1-1
Win v Athens and we're second at least - Marseille game will depend on what they've done against Ajax
Draw v Athens, third...
We need to put pressure on the keeper a bit more - he panics and his passing becomes wayward. We'll need at least one more goal to cater for our defensive lapse that we'll surely make.