Resistance

Level: Cantrip

Casting Time: 1 action

Range: Touch

Duration: Concentration, up to 1 minute

You touch one willing creature. Once before the spell ends, the target can roll a d4 and add the number rolled to one saving throw of its choice. It can roll the die before or after making the saving throw. The spell then ends.

Source: PHB, page 272. Available in the SRD.