Slot believes star man Salah to be the difference-maker for Liverpool
Salah, who said last month he was poised to leave Liverpool after this season, also scored in last weekend's 2-1 win over Chelsea, after netting the winning goal from the penalty spot at Wolverhampton Wanderers.
"I think that's one of the things that top players have, that they are always available and they show up in the big games," Slot told reporters.
"That's also what you need if you are a big club, like we are and like Arsenal is, then you need these quality players because if you don't have them, it's going to be quite difficult to get your results."
Salah, who is tied with Robbie Fowler as the Premier League's eighth-highest goalscorer of all time with 163 strikes, has scored six goals in the league this season. Salah was on the scoresheet in five of Liverpool's seven league wins.
"It's something you need to have as a club, to have these players that can make the difference for you, and Mo was that today offensively," Slot added.
Liverpool, who have 22 points from nine matches, are one point behind leaders Manchester City.
Slot's team play Brighton twice this week, away in the League Cup on Wednesday followed by a home league game on Saturday.