The Nox (S01E07)

Under government pressure to discover superior technologies, Col. Jack O'Neill and the SG-1 team head to a planet Teal'c remembers, one which has creatures called Fenri that possess the power of invisibility. The team arrives to discover a Goa'uld hunting party, led by Apophis, is already there tracking the Fenri. O'Neill's attempt at an ambush goes horribly wrong and the members of the SG-1 team are killed. They are revived — along with Shak'l, a Jaffa who was also killed in the battle — by the Nox. The Nox are a diminutive, peaceful, faerie-like people who occupy this planet, which previously was thought to be uninhabited by sentient life. The Nox can make things invisible — it is they who shield the A'kasha (the Nox's name for the flying insect-like creature Teal'c calls a Fenri) from the sight of the hunters — and bring back the dead. Their existence is jeopardized by the deadly technology of the Goa'uld when Shak'l reveals their secret and location to Apophis. O'Neill and the team offer to defend the Nox against Apophis, but the peaceful little people have their own solution — one that is far beyond the understanding of either the Goa'uld or the people of Earth.... (Metro-Goldwyn-Mayer (MGM))