I loved the first Narnia film for its Christian emphasis. The sequels kind of lost that. As for Tolkien, I have all three LOTR films on DVD and all three Hobbit films on my tablet for streaming. After watching both series in the cineplex.
I always saw “The Lion, the Witch, and the Wardrobe” generally as a metaphor for faith, the subjective forces of evil, God’s plan for the ages, and how the Gospel message impacts and influences that world around them. The other films/stories were more of a subjective nature, where the characters deal with circumstances and situations that we deal with that are put to light in lieu of Aslan. For example, “Prince Caspian” was about living in dark and evil times and dealing with them as if Aslan was dead, and not losing one’s soul in the midst of war, evil rulers taking away the rightful power from the one who is supposed to inherit the throne. In “The Silver Chair”, Jill Pole and Eustace are supposed to listen to Aslan’s voice, but they have to overcome the distractions that inevitably would veer them off course. Voyage of the Dawn Treader was about dealing with the inner fallibilities and shortcomings that hinder us from accomplishing the greater mission. And so on and so forth. “The Magician’s Nephew” is the creation story of Narnia and the Genesis, if you will, of the rebellion and the forces of good vs. evil.
I also love “The Hobbit” and “Lord of the Rings” films. Their spiritual element is found predominantly in the spiritual war dynamics that saturate the story and the characters themselves, mixed with the dynamics of human weakness, corruption and how that is impacted by absolute power. When they are helped out (cue, the eagles), it is as divine intervention swooping in to prevent what would otherwise be a defeat, death, or some calamity that would negatively impact Middle Earth. Fascinating films, fascinating stories.