Thats the entire enclosure...lighting is not shown in the picture because this was prior to setting up my lighting fixture that hangs over the left. I actually take him out to feed him so food dish is not a problem.
there is already a water dish on the side he is walking away from in the photo (was put in after photo was taken).
Assuming typical indoor lighting levels (and not underneath hot lights and assuming you won't have the plant roots sitting in stagnant water long), African violets, bromeliads ('air plants' and terrestrial bromeliads), peperomia, prayer plant, and spider plant may work for you (they are safe if eaten and don't require intense light which is hard to recreate indoors).
When possible. You need to add on to the enclosure. At least in the pic, it's way too small. Russians cover a lot of ground in the wild and need a minimum of a 4x8 enclosure. If you have an outside enclosure for day time and this is a night enclosure then the size should be fine.
Russians cover a lot of ground daily grazing. I recommend having food available all day. Tortoises are grazers. They eat a bit now, take a few steps, a bit more, Do a perimeter walk, eat a bit more, bask for a while, eat some more.... You get the idea.