Shield [Щит]
1st level, Abjuration
Casting time: 1 reaction, which you take when you are hit by an attack or targeted by the magic missile spell
Range: Self
Components: V, S
Duration: 1 round
Classes: Wizard,Sorcerer
Subclasses: Hexblade
An invisible barrier of magical force appears and protects you. Until the start of your next turn, you have a +5 bonus to AC, including against the triggering attack, and you take no damage from magic missile.
Source: D&D System Reference Document 5.1, © Wizards of the Coast LLC, licensed under CC BY 4.0.