How does one format subtitles in a screenplay? (Some small but significant dialogue is in Gaelic, while the rest of the script is English).

I'm looking at the Lord of the Rings script and their example is like this:
GALADRIEL (V.O.)
(Elvish: subtitled)
"I amar prestar sen: han mathon ne nen,
han mathon ne chae...a han noston ned
wilith."
(English:)
The world is changed: I feel it in the
water, I feel it in the earth, I smell it
in the air...Much that once was is lost,
for none now live who remember it.