As said before, walls & (self-)buffs/healing, maybe reposition yourself safely, especially in areas where teleportation effects don't work. Add other environmental changes too like clouds or illusions, so others find themselves in an altered venue with layers to sift through.
I like Walls of Force because they're invisible and nobody sees you cast it. Enemies will lose actions, maybe even spells, hitting those (possibly with blowback on themselves if you're lucky). Coordinate with your fellow PCs beforehand, perhaps with code words. Which I suppose goes for the whole plan, maybe ask your table what they'd like you to see on the battlefield. (Beforehand of course. Most GMs wouldn't allow that depth of metagaming via table talk.) For example, y'all might find ways to acquire Greater Darkvision or other ways to handle lack of vision, and then you drop several Heightened Darkness spells on a tough battle (where you've determined enemies can't handle it, maybe w/ Recall Knowledge).
It's a spell of utility, trickery, maybe even recovery, rather than simple free turns...otherwise enemy casters would use it to destroy the party before they even go.
(Funnily enough, in a horrible misinterpretation of the spell, a DnD 2.0 module had a prologue where that happened; the warrior-lich crushed the throats of a party of famous NPCs...who also never would have NOT scouted w/ summoned creatures, allies, & divinations. Big dumbness, though a noteworthy module otherwise.)