Photonic missile

Photonic missiles were Sontaran heavy weapons.

In 1902, the Fourth Doctor feared the Sontarans would barrage Earth with photonic missiles in response to an incursion by the Rutan Host. (TV: Horror of Fang Rock)

In 2371, at the Battle of Antares, a Sontaran Linx class cruiser destroyed a Rutan assault cruiser with a single photonic missile after the Rutan vessel lost shields. (PROSE: Lords of the Storm)