Looking for a forbidden city/kingdom cartoon with child priestess
I don't remember correctly but it was an animated movie/series.
The protagonist and his group travels in the desert and get lost trying to find a forbidden city which was once a powerful kingdom once where the king was highly praised, the past of the kingdom showed a child priest but she was assassinated by the enemy kingdom. She was a very powerful priest and the king only listened to her.
In one of the scenes the protagonist's group get caught in a desert storm and they take shelter in a nearby cave and meet their locals, in the cave they see an old stone or statue with engravings.
The forbidden city is in present more like an abandoned city where no one lives but when the protagonist reach there, they meet with asuras and fight them. And that's all I can remember, please help me.