Is it deer resistant?

Yes

Japanese Cedar is deer resistant.

Cryptomeria japonica

Deer: Rarely
Height: 70 ft (21.3 m)
Spread: 30 ft (9.1 m)
Zones: 5–10
Light: Full sun

Conifer
Perennial
Tree

Japanese Cedar (Cryptomeria japonica)

Photo: Jebulon · Public domain

Also called Japanese Cryptomeria

Perennial Cryptomeria

More details

Light: Full sun, Partial shade, Shade
Type: Conifer, Perennial, Tree
Maintenance: Low
Growth: Medium
Foliage: Evergreen
Best uses: Barrier, Lawn, Naturalized, Privacy, Specimen