The good news is Arsenal will head to the Czech capital next week with their Europa League hopes very much alive.
Nicolas Pepe came off the bench and gave Arsenal the lead after 86 minutes, but Tomas Holes headed a late, late equaliser to put the tie in the balance.
The not so good, is they will have to do something few have managed to reach the semi-finals and keep their season alive.
Nobody has managed to beat Slavia Prague at their Sinobo Stadium home in all competitions all season and only four sides have managed to hold them to draws, with just two being the type of score draw that would be enough to see Arsenal into the next round in 90 minutes after this first-leg stalemate.