Diphaler's Arcane Forcefield

You create a shimmering golden dome of protection, 10 feet in radius, defending you and your companions briefly from harm. The dome has 50 hit points and takes damage instead of it's inhabitants, and  effects targeted at one of them will instead affect the dome. The dome atoumatically fails any Dexterity saving throw and automatically succeeds any strength and constitution saving throw. When you cast this spell, choose up to 10 creatures you can see; they are able to enter the dome, and no one else can.

At higher levels

For every additional spell slot level above 4th, the forcefield has an additional 10 hit points.