The 29-year-old played the full 90 minutes in Sunday's 2-1 home defeat by Celta Vigo which ended Barcelona's La Liga title challenge with one game left in the season.
Ter Stegen blocked penalties by Jon Bautista and Mikel Oyarzabal in the shootout before Barcelona substitute Riqui Puig converted the winning spot kick after the game had ended 1-1.