Compare files & deduplicate file without sorting?

[postcd]

Hello,

i got two files with several thousand lines

and i want to deduplicate file1 (remove from it lines that already exist in file2)

these lines contains various symbols like quotation marks, $ etc

the command must not change lines order. just remove duplicate lines...

i found several ontopic tutorials, but they use sorting which i cant use as its important for lines order to stay as it is, just remove duplicate lines..

Thank you