Eadrun's Shielding Circle

Eadrun's Shielding circle creates an arcane barrier that prevents any projectile from entering. The ritual creates a 10' diameter shield of force that blocks all objects or creatures, magical or otherwise from penetrating unless they are granted access at the time of casting . Once cast the circle remains intact for 8 hours or until the ritual circle that forms its area of effect is disrupted from within. The barrier does not stop magics that created effects within it, such as a Cloud of Dagger's spell or spells that move items or objects point to point such as Misty step. 

The caster can cast spells through the barrier without issue and, once the circle is created can leave its area without issue.