You create three shimmering barriers of semi-permeable force to deter your foes. Each barrier appears between two points within range. Each barrier is a 5 feet wide, 10 feet tall and 1 inch thick panel that lasts for the duration of the spell.   When a hostile creature makes an attack that passes through the barrier, the damage of that attack is reduced by an amount equal to your spellcasting ability modifier. Additionally, hostile creatures attempting to pass through a barrier must make a Strength saving throw or be unable to do so. A creature can attempt this saving throw more than once per turn, but uses half its movement each time it does so.