I must have seen it somewhere myself or I wouldn’t have heard of this. But this was all I was able to come with. This seems to be a speech by Rav Michel Yehudah. In it he quotes the Iggeres HaGra from a Nusach of Rav Zundel MiSalant:
?????? ???”? ?”? [???? ?????? ????”? ????? ?”?] ???? ??: ???? ???? ????, ??????? ??? ????, ?????? ??? ?????, ??? ????? ????? ???????, ???? ???”? ???, ????? ???”? ????? ???? ????? ??. ?????? ??? ???”? ?????? ??? ????? ?????, ??????? ???? ?????? ?????? ????? ????? ????? ?????? ????? ????? ??? ?? ???”?. ?????? ????? ????? ?? ????? ?????, ?? ?? ???? ??? ????”?, ??? ?? ???”? ?”?, ”??????? ???????”, ??????? ?? ?? ?? ??? ????? ?????,
This is the link if its let through: