The simplest answer is: don't. Instead, select your current range, then press Ctrl-F9 to enclose it in a pair of field braces, to which you then add the requisite 'QUOTE' and opening/closing double-quote pair.
Alternatively:
• Press Ctrl-F9 twice so you get {{}}
• Reposition the insertion point between either the {{ or the }} and press Ctrl-F9 again, so you end up with {{}{}}
• Then fill in the field coding so you end up with the:
Code:
{QUOTE "{SAVEDATE \@ "d" \* ordinal} day of {SAVEDATE \@ "MMMM, YYYY"}"}