You dodge and weave, and make for the far door. Due to the dip in the walkway towards the centre of the chamber, you are well protected from fire at the troops try to close with you.
Collan gets through the door first, and Niil sees a black blaster rifle slam hard into his mid-section. Collan collapses on the deck, at least winder, though perhaps injured worse.
[Actions?]
There's one trooper, badly injured, who got the drop on Collan. He's in a bad way (Wound x2). You could probably just kick him off the platform. However, stopping to fight will open you to more accurate attacks from the chasing troopers. You could just bull rush him now, if you feel you're skilled enough and keep moving, but if you stop to use a weapon, you may come under fire.