Retrieve permissions by selected role id in Spatie

Spatie Role has a relation with Permissions

  /**
     * A role may be given various permissions.
     */
    public function permissions(): BelongsToMany
    {
        return $this->belongsToMany(
            config('permission.models.permission'),
            config('permission.table_names.role_has_permissions'),
            'role_id',
            'permission_id'
        );
    }

So you can just say

$permissioins = $role->permissions ;