Here’s how to list GCP firewall rules while filtering a service account. Output is exported as a CSV file.
gcloud compute firewall-rules list \ --project host-project \ --filter=service-account-name \ --format="csv(name,network,direction,priority,sourceRanges.list():label=SRC_RANGES,destinationRanges.list():label=DEST_RANGES,allowed[].map().firewall_rule().list():label=ALLOW,denied[].map().firewall_rule().list():label=DENY,sourceTags.list():label=SRC_TAGS,sourceServiceAccounts.list():label=SRC_SVC_ACCT,targetTags.list():label=TARGET_TAGS,targetServiceAccounts.list():label=TARGET_SVC_ACCT,disabled)" \ > export.csv |