אַנְתְּ יְיָ תִּנְטְרִנוּן לְצַדִיקַיָא תִּנְצְרִנוּן מִן דָרָא בִישָׁא הָדֵין לְעַלְמִין.
1. watch them… guard him | תִּשְׁמְרֵם תִּצְּרֶנּוּ –This sentence too can alternatively be read as a request, "may You, Hashem…". Malbim explains that though the two roots "שמר" and "נצר" are somewhat synonymous, "נצר" is more intense. He suggests that the subject of the first word is Hashem's sayings, while the subject of the second is the silver. Cf. Radak that the subject of both verbs is the poor of verse 6, who are mentioned first in the plural and then in the singular, to refer to each individual.
2. from this generation forever | מִן הַדּוֹר זוּ לְעוֹלָם – The connotation might be that Hashem shall guard the poor "from the wicked people of the generation, forever" (R. Saadia, Radak, and others) or: "from this age on".