As far I know, FC Barcelona and Arsenal have played 4 times.
First time: FC Barcelona 2-1 Arsenal
Second time: Arsenal 2-2 FC Barcelona
Third time: FC Barcelona 4-1 Arsenal
Fourth time: Arsenal 2-1 FC Barcelona
Arsenal has just beat Barcelona once. that's their last meeting
the frist time in history Arsenal bet Barcelona Arsenal beat Barcelona in the 1st leg of 2011 quarter final
Henry played for these main clubs Monaco, Juventus, arsenal and barcelona.
Never - their best is runners-up in 2006, losing to Barcelona.
Arsenal have never won the champion league, the nearest they reached was the 2006 final, in which they lost to Barcelona, 2-1.
Arsenal have never won the European Cup or Champions League. Their best performance was in 2006 when they reached the final, but was beaten by Barcelona 2-1.
In all competitions, Arsenal have played Liverpool 211 times, with Arsenal winning 74, Liverpool winning 82, and there being 55 draws.