The dread magi let the heretic psyker go and stepped into the open.
-"Zuriel. Zuriel Ganymede Quillos." He said while making an almost mocking bow seeing how overemphasized it was with arms pointing to his sides. He returned to his normal posture.

-"As for a heart attack, i could probably resuscitate the beacon telling anyone who is not a psychic null on this ship where you are. I am trained in medical emergency response as well as mechanical." The jab was told in his usual slimy polite voice, which simultaneously mocked the marine and his ally while also warning about an all to real danger the two probably hadn't thought about.
Then Zuriel added.
-"As for your frater astrotechnicus companion, i do not know his current whereabouts, angel." The last word was emphasized differently. But it clearly referred to the nickname for the astartes.

The oily robed machine man began to follow Lucius, completely ignoring if he'd approve of that or not.