from Divrei Hokhmah
In the silent meditation recited at the conclusion of the Amidah, the language of petition changes to first person singular from the first person plural used elsewhere (our God, remember us, reign over us). In this concluding meditation, the petitioner speaks on behalf of herself, alone:
Elohai, netzor leshoni mera’ u-sfatai midabber mirmah
My God, keep my tongue from evil, my lips from lies.