Looking for the name of this missing part

Hello,
Sorry to post like a child, but need some expert advice.
I'm missing this part on my 4runner, and I really don't know the technical name! Was looking online (front / number / clearance / fender / ground), but with no success.
Please, let me have the proper name of this part so I can search online.
In addition, it is really bad to drive around without this part? My rides are within the city, now it's the raining season (in my location) so the roads are wet to the level of floods. Although my 4runner is lifted, the water are still touching some components there.. Plus, planing go for some light / easy off road rides.

 

Front skid plate maybe, not sure what that arrow is pointing to.

 

The arrow is pointing to the (missing) front skid plate.
You got it, thanks!