Okay, so running a blue/white control deck, that has protection, I am curious.
Does Protection from Color of choice protect even from a board wipe of that color that damages/destroys all creatures on the field.
According to Protection, it can't be damaged by that color so what exactly would happen?
Such as if I give a card Protection from Red, and someone does Chandra, Pyrogenius, and her -10 Ability deal damage to target player and each creature they control?
If a creature has protection from a certain color—
it can't be the target of spells of that color or abilities from sources of that color (C.R. 702.16b),
it can't be attached to by permanents of that color (C.R. 702.16c-d),
all damage that sources of that color would deal to it is prevented (C.R. 702.16e), and
it can't be blocked by creatures of that color (C.R. 702.16f).
(By definition, spells exist only on the stack, not on the battlefield [C.R. 112.1], so they can't block or be attached to anything [C.R. 506.3, 701.3b]; therefore, that part of the protection ability doesn't apply [review C.R. 702.16c-d, 702.16f].) Whether a spell or ability affects a creature with protection depends on what that spell does and whether it has targets.
For example, Wrath of God and Upheaval neither cause damage to anything nor target anything, so they can affect creatures with protection from white or protection from blue, respectively, as normal.
On the other hand, while Pyroclasm doesn't target anything, it does deal damage to "each creature", so that damage it would deal to creatures with protection from red is prevented.
Also, the last ability of Chandra, Pyrogenius targets only a player, not any creatures. Even so, however, it makes Chandra, a red planeswalker, deal damage to certain creatures (and to the targeted player), so that again, damage Chandra would deal to creatures with protection from red is prevented.
EDIT (Dec. 24, 2021): Some rules were renumbered in the meantime.
EDIT (Dec. 24, 2021): Note that the game has no notion of "board wipes" as such. There are numerous spells that can negatively affect all permanents of a certain kind on the battlefield at the same time — Wrath of God, Blasphemous Act, Armageddon, Obliterate, Upheaval, Decree of Annihilation, etc. — and they don't all affect the permanents they apply to in the same way.
Does Protection from Color of choice protect even from a board wipe of that color that damages/destroys all creatures on the field.
According to Protection, it can't be damaged by that color so what exactly would happen?
Such as if I give a card Protection from Red, and someone does Chandra, Pyrogenius, and her -10 Ability deal damage to target player and each creature they control?
For example, Wrath of God and Upheaval neither cause damage to anything nor target anything, so they can affect creatures with protection from white or protection from blue, respectively, as normal.
On the other hand, while Pyroclasm doesn't target anything, it does deal damage to "each creature", so that damage it would deal to creatures with protection from red is prevented.
Also, the last ability of Chandra, Pyrogenius targets only a player, not any creatures. Even so, however, it makes Chandra, a red planeswalker, deal damage to certain creatures (and to the targeted player), so that again, damage Chandra would deal to creatures with protection from red is prevented.
See also this thread and this thread. Also, review C.R. 115.10a and 115.1a.
EDIT (Dec. 24, 2021): Some rules were renumbered in the meantime.
EDIT (Dec. 24, 2021): Note that the game has no notion of "board wipes" as such. There are numerous spells that can negatively affect all permanents of a certain kind on the battlefield at the same time — Wrath of God, Blasphemous Act, Armageddon, Obliterate, Upheaval, Decree of Annihilation, etc. — and they don't all affect the permanents they apply to in the same way.
D- damage
E- enchant
B- block
T- target
This has helped me remember what protection does many times.
RULES OF MAGIC :
http://magic.wizards.com/en/game-info/gameplay/rules-and-formats/rules