Is it deer resistant?

Yes

Arizona Cypress is deer resistant.

Hesperocyparis arizonica

Deer: Rarely
Height: 60 ft (18.3 m)
Spread: 20 ft (6.1 m)
Zones: 7–12
Light: Full sun

Perennial
Tree

Arizona Cypress (Hesperocyparis arizonica)

Photo: Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0

Perennial Hesperocyparis

More details

Light: Full sun
Type: Perennial, Tree
Maintenance: Low
Growth: Fast
Foliage: Evergreen
Features: Drought tolerant
Best uses: Barrier, Coastal, Play area, Privacy, Slope, Specimen