Just as Roger fired the Basilisk swerved closer to its prey- and out of the lasers line of fire. The light however, did cause it to rear back and hiss instead of striking at them.

Sirius risked a glance at the creature, keeping his line of sight close to the floor. Once he saw its position he shut his eyes again. He raised his wand at what was hopefully the Basilisk's eyes.

"Conjunctivitis."

Luck was not on his side, at least not in this instance. The spell struck the Basilisk's body and the scales repelled it back onto Sirius.

"SON OF A-" Out of instinct, Sirius dropped his wand and raised his hands to his swollen eyes.