Excluding posts from the Relevanssi index

functions.php

<?php

// Put this in your theme functions.php
add_filter( 'relevanssi_do_not_index', 'rlv_skip_page', 10, 2 );
function rlv_skip_page( $skip, $page ) {
  $excluded_pages = array( 123, 234 ); // List all the ID numbers of the excluded pages here.
  if ( in_array( $page, $excluded_pages, true ) ) {
    $skip = true;
  }
  return $skip;
}