Fate/stay night - 2x17 - The Dark Sword Bares Its Fangs- Followmy.tv

Shirō and Rin confront Caster and Kuzuki, who engage them in battle. Meanwhile, Lancer overwhelms Archer with his attacks, after which Archer mocks his sense of loyalty and honor, thus infuriating him. As a result, Lancer tries to use his powerful Noble Phantasm to strike him down, but Archer is barely able to counter it with a magical barrier, which expends most of his strength in the process and destroys the church. After praising Lancer's power, Archer reveals he staged his betrayal of Rin so he could take advantage of Caster when she had her guard down, prompting Lancer to leave.