From the wonderful RedGuides Wiki

This command is added by EverQuest

Syntax Key
Notation Description
Text without brackets or braces Required items
<Text inside angle brackets> Placeholder for which you must supply a value
[Text inside square brackets] Optional items
Vertical bar (|) Separator for mutually exclusive items; choose one
{Text | inside | braces} Set of required items; choose one
Ellipsis () Items that can be repeated
Syntax /blockspell [display | add | remove | clear] [me | pet] <spellnumber>...
Description Toggle blocking beneficial spells from being cast on you or your pet. The blocklist is written to the [BlockedSpells] section of your <character>_<server>.ini


Option Description
display [me | pet] Outputs a list of blocked spells on you or your pet.
add [me | pet] <spellnumber>... Adds the spell(s) to the blocklist on you or your pet.
remove [me | pet] <spellnumber>... Removes the spell(s) from the blocklist on you or your pet.
clear [me | pet] Clears the blocklist


Example: /blockspell add me 1693 2517, will block spells 1693 (Clarity II) and 2517 (Spirit of Eagle) from being cast on you.

Example: /blockspell display pet, will show a list of all spell currently blocked for your pet.

See also