Sturdy on small pieces (waist, shoulders, hands, feet), infused on big ones (chest, legs, head, shield) with glyphs of prismatic defense on everything. On my DK I stayed with divines, since I have high magicka recovery and a lot of multipliers that do add up, and DK has a skill that converts excess magicka back into stamina if needed, and also lets me cast other skills. But sturdy would work best on most builds, especially when learning, and not knowing exactly when to open up - blocking for longer gives you a bigger margin of error.

Weapons both infused, crusher enchant on front bar, weakening on back bar, and shield play enchantment on jewelry - those do reduce your block cost more than having sturdy, especially if you have already a lot of CP in Shadow Ward star. I usually put at least 48 there regardless of char, since even non-tanks need to block a lot in some trials.

Nirnhoned and Reinforced are not necessary if wearing 5p of heavy armor since you are most likely capped on spell resistance, especially as DK or Templar even without those traits. Physical resistance is less important, due to the fact most physical attacks are blockable, and most non-blockable damage in trials and dungeons is magic or elemental.