After Sim Shalom/Shalom Rav in Shemoneh 'Esreh, many Siddurim print YiHyu LeRatzon (Tehillim 19:15) before Elokai Netzor.
Not every Siddur prints this. I don't recall which editions I've seen without it, but I am sure I have seen it.
If we say YiHyu LeRatzon at the end of Elokai Netzor, are we supposed to be saying it twice, and is the earlier instance required?