diff --git a/src/borg/archiver/delete_cmd.py b/src/borg/archiver/delete_cmd.py
index 5ad81f95b..5ff05d33d 100644
--- a/src/borg/archiver/delete_cmd.py
+++ b/src/borg/archiver/delete_cmd.py
@@ -22,6 +22,7 @@ class DeleteMixIn:
             archive_infos = [manifest.archives.get_one([args.name])]
         else:
             archive_infos = manifest.archives.list_considering(args)
+        archive_infos = [ai for ai in archive_infos if "@PROT" not in ai.tags]
         count = len(archive_infos)
         if count == 0:
             return
diff --git a/src/borg/archiver/prune_cmd.py b/src/borg/archiver/prune_cmd.py
index 42a375c21..fd0f0fcfd 100644
--- a/src/borg/archiver/prune_cmd.py
+++ b/src/borg/archiver/prune_cmd.py
@@ -151,6 +151,7 @@ class PruneMixIn:
 
         match = args.name if args.name else args.match_archives
         archives = manifest.archives.list(match=match, sort_by=["ts"], reverse=True)
+        archives = [ai for ai in archives if "@PROT" not in ai.tags]
 
         keep = []
         # collect the rule responsible for the keeping of each archive in this dict
diff --git a/src/borg/testsuite/archiver/delete_cmd_test.py b/src/borg/testsuite/archiver/delete_cmd_test.py
index e07ef2736..a163f3d71 100644
--- a/src/borg/testsuite/archiver/delete_cmd_test.py
+++ b/src/borg/testsuite/archiver/delete_cmd_test.py
@@ -32,3 +32,19 @@ def test_delete_multiple(archivers, request):
     cmd(archiver, "delete", "-a", "test1")
     cmd(archiver, "delete", "-a", "test2")
     assert not cmd(archiver, "repo-list")
+
+
+def test_delete_ignore_protected(archivers, request):
+    archiver = request.getfixturevalue(archivers)
+    create_regular_file(archiver.input_path, "file1", size=1024 * 80)
+    cmd(archiver, "repo-create", RK_ENCRYPTION)
+    cmd(archiver, "create", "test1", "input")
+    cmd(archiver, "tag", "--add=@PROT", "test1")
+    cmd(archiver, "create", "test2", "input")
+    cmd(archiver, "delete", "-a", "test1")
+    cmd(archiver, "delete", "-a", "test2")
+    cmd(archiver, "delete", "-a", "sh:test*")
+    output = cmd(archiver, "repo-list")
+    assert "@PROT" in output
+    assert "test1" in output
+    assert "test2" not in output
diff --git a/src/borg/testsuite/archiver/prune_cmd_test.py b/src/borg/testsuite/archiver/prune_cmd_test.py
index 2c44064bf..207f2bdb7 100644
--- a/src/borg/testsuite/archiver/prune_cmd_test.py
+++ b/src/borg/testsuite/archiver/prune_cmd_test.py
@@ -241,3 +241,19 @@ def test_prune_repository_glob(archivers, request):
     assert "2015-08-12-20:00-foo" in output
     assert "2015-08-12-10:00-bar" in output
     assert "2015-08-12-20:00-bar" in output
+
+
+def test_prune_ignore_protected(archivers, request):
+    archiver = request.getfixturevalue(archivers)
+    cmd(archiver, "repo-create", RK_ENCRYPTION)
+    cmd(archiver, "create", "archive1", archiver.input_path)
+    cmd(archiver, "tag", "--set=@PROT", "archive1")  # do not delete archive1!
+    cmd(archiver, "create", "archive2", archiver.input_path)
+    cmd(archiver, "create", "archive3", archiver.input_path)
+    output = cmd(archiver, "prune", "--list", "--keep-last=1", "--match-archives=sh:archive*")
+    assert "archive1" not in output  # @PROT archives are completely ignored.
+    assert re.search(r"Keeping archive \(rule: secondly #1\):\s+archive3", output)
+    assert re.search(r"Pruning archive \(.*?\):\s+archive2", output)
+    output = cmd(archiver, "repo-list")
+    assert "archive1" in output  # @PROT protected archive1 from deletion
+    assert "archive3" in output  # last one