It seems, it will be difficult for Barcelona in this match, playing away and in the 22nd minute Barcelona defender Cubarsi got a red card. But even so, it seems Benfica also still has enough difficulty to score their first goal in the first half after Barcelona played with only 10 players. But yes, in the second half it will be very possible for Benfica to score a goal and beat Barcelona in this first leg. But, if Benfica fails to beat Barcelona and the match ends in a draw, then the result will still ensure Barcelona still has a good chance in the second leg to qualify for the quarter-finals. But so far until the 43th minute, Barcelona is still leading for ball possession, and that is a good effort to not give Benfica a chance to score a goal.
A red card does not really affect a strong team but it does for those teams are not strong enough to defend their side. When a red card is given to a player, the remaining players have to re-strategize in the field to defend themselves and strike more to scare the opponent and with that fear, the side with 10 players can score again. Barca has not to worry because of a red card to a player instead focus and strike more. Barcelona now is leading with 1 - 0. Raphinha scored the goal at the 61 minutes in the second half, though Benfica tackling Barcelona but Barca is also resisting their attacks. From my own view, Barcelona will win the match.Galatasaray is the most favored team to win the title this season, currently entering the 25th week and almost all teams have played their 25th match. Galatasaray is currently the only team that is unbeaten in 25 consecutive matches, and with the points that Galatasaray has, I think they will be quite relaxed at the top of the standings, but unfortunately lately they have only been able to get a draw, so Fenerbahce managed to reduce the points difference to only 4 points, making the competition at the top of the standings tight again.
and with 13 matches left, anything is still possible, and if Okan Bad's team is unable to return to winning ways, then Fenerbahce will continue to chase and may be able to shift Galatasaray's position which is now at the top of the standings.
Liverpool has just scored 1 goal. It is quite surprising that Liverpool only has a very small chance to score but they finally succeed scoring goals. So far, Liverpool only has 2 total shots. Meanwhile PSG has 27 total shots, 10 shots on target. I totally can't believe that they failed to score a single goal. There is a big problem with PSG attackers today. They have a very lack accuracy. 
As usual, even though Liverpool only made a few attacks and did not dominate the match, they were always able to score goals and win the match.
And even though in this match H. Elliot managed to score a goal against PSG, in my opinion the main highlight of this match was seeing how Allison played under the crossbar, he managed to make some pretty brilliant saves, so that out of the many attempts, not a single shot launched by PSG players was able to penetrate the goal which was well guarded by Allison. In addition, in this match, Liverpool's back line also showed a pretty solid defense, so they were able to make sweeps to prevent PSG players from making more direct shots into Liverpool's goal.