Annabel's Instant Aegis

When you or a creature you can see in range is targeted by an attack, you can manifest a shimmering, iridescent barrier in the shape of a dome to prevent the attack from touching its target. The dome is a 10 feet sphere centered on a point or a creature that you can see in range and it lasts until the start of your next turn.

While the spell is active, spells cannot pass or spread through the aegis, as well as ranged and melee attacks and hostile creatures.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the sphere grows 5 feet for each slot level above 2nd.

''Abjuration is about the true desire to prevent nefarious forces and undesirable beings
to enact their will freely and to protect the innocent. Your shields, barriers and wards are
only as strong as your own willpower.''

Excerpt from a class directed by scholar-mage Annabel of Sylvengard Academy.