Shielded
Protected from harm/danger, sheltered, defended, safe and sound, all right, shielded, guarded, secure, and out of harm's way.
Secure
Secure, risk-free, riskless, unassailable, fortress-like, innocuous, non-poisonous, benign, mild, sound, low-risk, impregnable, invulnerable, harmless, non-toxic, non-irritant, and wholesome.
Cautious
Cautious, prudent, attentive, unadventurous, unenterprising, circumspect, chary, timid, conservative, and leery.
Unharmed
Unharmed, alive and well, unhurt, unscathed, undamaged, out of the wood(s), all right, well, uninjured, in one piece, out of danger, and OK.
Strongbox
Strongbox, safe-deposit box, casket, cash box, depository, strongroom, safety-deposit box, coffer, money chest, repository, locker, and vault.