Brank (ok, why outright destroy my ship?)
With the ships final power focused on hovering just a bit longer, most of the crew escapes by the captain redirecting the portal to Tum so that the crew could escape quickly.
The diplomat, seeing the attack, begins talking in a forgotten language, pointing at the attacking ship. Out of his finger shoots out a blinding light, hitting the side of the ship... no damage....
.
Your crew ponder for a bit what was that thing which hit the craft, though the thinking time quickly fell, as you notice the warmth in the reactor starts to rise, not quitting. After a while the crew needs to wear extra protective gear just to not die of the blasing heat radiating from the source of the ships power.