Slimani, whose last league appearance for the Foxes came on New Year's Day, will be sidelined for at least two weeks.
Magpies striker Dwight Gayle looked to have earned the visitors three precious points on the south coast with two simple, first-half finishes, but they were made to pay for their profligacy, which included Jonjo Shelvey missing an open goal at 2-0.
"It is always hard when you have a team that is pushing at home but we had the chances to finish the game and didn't do it, we have to improve on that", Benitez said.
"But it's something that can happen, especially in the Premier League when you make mistakes".
Winter Olympics Skier Completes The Most Mindblowingly Average Performance Of All Time
The same can be said for all those skiers representing snow-challenged countries such as the Philippines, Eritrea and Pakistan. But even that failed attempt to enter politics wasn't as audacious as what she just pulled off at the Winter Olympics .
"I don't think that we switched off, it's just lack of concentration in a couple of situations that we could do better". "The good thing is that we don't have too many injuries, so someone had to stay out".
Cherries manager Eddie Howe said he was satisfied with the point, adding: "It was a odd afternoon". Today was tough because we weren't very good for 70 minutes, but i have to praise the character and attitude of the team.
"And you really do need everyone to be focused, try and not sulk, not feel sorry for yourself before the game's ended and credit to the players for doing that".
Bournemouth have now picked up 13 points from losing positions in the Premier League this season - a joint-high along with Everton.
Bournemouth certainly have reason to think they can produce a much better display on Saturday. When you have played so well against one of the top sides, you are expected to do well again, so we have to make sure we perform.