にざっと目を

skim through

→ に
phrase Rare #20,672
skim through Usually used as part of にざっと目を通す, meaning to quickly read or skim a document. The に marks the document being looked over; ざっと means quickly or roughly.
JA: 会議の前に報告書にざっと目を通した。
EN: I skimmed through the report before the meeting.

私たちの上司は提出されたすべての書類にざっと目を通す

Our boss skims through all the submitted documents.