well not symbolism but do refrence some biblical concepts:
-When the citizens of Neo-Tokyo see Tetsuo deflect tank shells and destroy helicopters and tanks, somebody shouts out, "It's the Great Awakening!" while another says, "Don't be fooled! This isn't the Rapture! He's a false messiah!"
-Later, Lady Miyako appears with her entourage and, during the chaos of battle, chants, "Burn all the unclean believers of our time! Give yourselves into the flames, children, you will all be born again. Consume our hearts! Wash our unclean hearts in the eternal fire!"
the scenes I'm referring to occur from approximately 1:06:00 (Tetsuo walking out of the smoke of the exploding helicopter) until 1:08:00 (Nezu's escape), and then 1:10:00 (Miyako's entourage) until 1:12:00 (Tetsuo destroys the bridge). but it may be cut depending on the movie cut you got =P