According to the reports from Divine Sword Cliff, Fairy Sword Ji and the others knew that to capture the Outer Realm Cultivators, they first had to drain the Universe Flying Saucer's energy. They also had to watch out for the saucer's Laser Cannon, Black Spiders, and other attacks. Most troublesome of all, those Outer Realm Cultivators would choose to self-destruct if they knew they were about to be captured, so the group had to guard against that.
Draining the Universe Flying Saucer's energy posed no problem for the people of Lingxiao Pavilion. They excelled at long-range attacks, and their mastery of powerful archery techniques far surpassed that of Chi Xue and the others. If even Chi Xue's group could drain the saucer's energy, then the people of Lingxiao Pavilion certainly could.
As for guarding against the Laser Cannon, Black Spiders, and the other attacks, that was even less of a problem. Many Lingxiao Pavilion cultivators had trained in Fleeting Light and Shadow and Electric Serpent Movement. What was more, Ling Tian, the Dragon Turtle, and the others would help them when the time came, so there was nothing to worry about.
Ling Tian and Fairy Meng Shang could use their fused Phenomenal Domain to conjure walls of earth, barriers of ice, and other arts to block the Laser Cannon's attacks. The Dragon Turtle and the others could also create spatial barriers. All of these would buy everyone some time, so dodging the Laser Cannon posed no problem.
If all else failed, Ling Tian could use the Time Secret Technique to briefly halt the Universe Flying Saucer's attacks. If their cultivators still got hit under those circumstances, it could only mean they were asking for it.
As for the last problem—the Outer Realm Cultivators' self-destruction—many in Lingxiao Pavilion excelled at illusions.