Saleen had someone stand guard outside and did not bring Sika in. He brought Daniel and Isabella instead.
They were not high level mages, but since the temple was built in a place with so much human traffic, the Goddess of Myers' personality dictated that she would not place something terrifying.
Furthermore, Saleen wielded the powers of the Puppet World Realm, making him practically immune to being surrounded. The territorial powers were greater than even his own, and bringing Nailisi and the others would not make much of a difference.
Saleen's family badge was filled with energy. The Thunder Dragon Blaster only needed an hour to cool down, and 24 level 11 spells were infused within the Starline Robe.
Saleen no longer needed to be as cautious and meticulous, and he no longer shirked things, as long as the enemy did not possess greater equipment.