Ekkehardt ignores the flames - they might be magical and have more of a chance at actually affecting him, but he can take a little singeing (especially after that whole incident with Grimm). Rather than use a spell of his own to attempt to counter Annabelle directly, he burns one of his barrier spells to put a bubble around Héctor, protecting him temporarily from the tendrils.

He leaps into the fray, pulling two of his hidden knives from their hip sheaths. They hum with dissonant tones, glowing crimson as they cleave through the tendrils like a hot knife through butter. Turning them on the mage herself isn't his aim, though; he kneels to cut through the magic circle itself, the spellwork fraying and coming apart where the blades touch it, weakening the spell.

"Jail!" He doesn't shout anything else, trusting she'll know how to handle the situation from here.