1)
What is the meaning of "Einai Kalu li'Yshu'asecha"?
1.
Radak (here and 82): Since eyes look for people to help him, this is a metaphor for Hashem's help, to save him from Zedim, lest they oppress him. I did not look for man's salvation, only Yours!
2.
Malbim: I look forward to Your salvation with longing for an extended time.
2)
What is "u'Imras Tzidkecha"?
1.
Rashi: It is what You promised to me.
2.
Radak: You will be Matzdik (make proper) what You said - what You promised me via the Navi.
